Ask Doctor Dawn

Broadcast from KSQD, Santa Cruz on 9-18-2025: Dr. Dawn opens by establishing her psychobiology background and introducing the neurohormonal axis connecting mind and body. She describes revolutionary research published in Nature Neuroscience showing that simply seeing sick people in virtual reality triggers actual immune responses. The study used VR avatars displaying infection symptoms approaching participants, measuring brain activity with EEG and fMRI while analyzing blood samples for immune cell changes. The research demonstrates that infectious avatars approaching in virtual reality activate the same immune pathways as actual flu vaccination. Brain areas including the salience network and peripersonal space system detect potential threats and communicate with the hypothalamus to trigger white blood cell activation. Proximity matters - threats 20 feet away don't trigger responses, but approaching threats do. Dr. Dawn explains the sophisticated methodology, including 128-channel EEG monitoring and flow cytometry analysis of immune markers. Participants showed faster reaction times when infectious avatars approached compared to neutral ones, demonstrating subconscious threat assessment. The study reveals built-in disgust responses that evolved to protect against pathogens. She comments on how her medical training rewire the protective disgust reaction through repeated exposure.. She transitions to discussing stress effects on gastrointestinal function, explaining how the gut-brain axis operates through the vagus nerve and neurohormonal pathways. The adrenal glands produce both immediate epinephrine responses and longer-term cortisol release, with chronic stress leading to digestive disruption, increased intestinal permeability, and microbiome changes that can trigger food sensitivities and autoimmune conditions. Dr. Dawn details the difference between acute and chronic stress responses in the gut. Acute stress redirects energy from digestion for fight-or-flight responses, while chronic stress causes mast cell activation, histamine release, mucus layer thinning, and bacterial overgrowth. These changes can lead to irritable bowel syndrome, increased food allergies, and even celiac disease in genetically susceptible individuals. The discussion covers various brain networks including the default mode network active during rest, the central executive network for problem-solving, and the salience network that switches between them when detecting important stimuli like threats, food, or reproductive opportunities. Functional MRI studies show these networks' activity patterns and their connections to immune system regulation through the hypothalamus. Dr. Dawn emphasizes practical implications for modern life, warning that constant screen exposure and doom-scrolling activate chronic stress responses unnecessarily. She recommends avoiding phones upon waking, spending time outdoors, wearing amber glasses for evening screen use, and practicing specific breathing techniques - inhaling for 5 counts, holding for 5, exhaling for 5, holding for 5 - to regulate nervous system activation and reduce inflammatory responses.

Broadcast from KSQD, Santa Cruz on 9-11-2025: Dr. Dawn announces COVID-25/26 vaccines are now available at Safeway with same-day appointments, urging listeners to schedule quickly due to potential supply shortages amid uncertain federal vaccine policies. She discusses promising research on metformin for knee osteoarthritis in obese patients. Studies show metformin users lost half as much cartilage (0.75% vs 1.5%) over four years and had reduced knee replacement risk. The mechanism involves AMPK protein kinase pathways that reduce inflammation and cellular energy storage, with benefits independent of weight loss effects. Dr. Dawn warns hunters about blue pig meat from wild boars that consume rodenticide, which acts like warfarin to prevent blood clotting. The anticoagulant creates blue-tinted tissue that cooking cannot eliminate, making such meat dangerous for consumption during hunting season from September through November. She criticizes the elimination of women's health research funding, highlighting how the Eunice Kennedy Shriver Institute has advanced medical knowledge benefiting everyone. Dr. Dawn notes that $2.5 billion in research was rescinded for containing terms like "women" and "female," creating dangerous knowledge gaps when women experience different disease symptoms and medication responses than men. The brown rice versus white rice debate centers on arsenic content, with brown rice containing about 138 parts per billion compared to 93 in white rice. While both remain below WHO safety limits, children are especially vulnerable. Dr. Dawn recommends diverse grain options and specific cooking methods like soaking, rinsing, and using excess water to reduce arsenic levels. A caller asks about glutathione supplementation, specifically gamma-glutamyl cysteine products. Dr. Dawn explains how these precursors bypass liver metabolism to deliver glutathione to cells, while discussing the balance between oxidative and reductive stress. She notes individual genetic variations can affect supplement responses and emphasizes measuring markers rather than expecting immediate symptomatic improvements. Another caller inquires about histamine intolerance causing puffy eyes and food reactions. Dr. Dawn explains histamine's role as a neurotransmitter, sources in fermented foods and gut bacteria, and genetic enzyme deficiencies in DAO and histamine transferase. She recommends cromolyn sodium eye drops and systematic food elimination, particularly targeting recently increased consumption of chai tea and smoked brisket. Dr. Dawn concludes with news about an AI tool called FaceAge that predicts biological age and survival rates from facial photographs. Trained on 60,000 photos of people over 60, the system achieved 80% accuracy in predicting six-month survival for terminal cancer patients compared to 61% accuracy for human doctors, potentially offering a non-invasive health assessment tool.

Broadcast from KSQD on 9-04-2025: Dr. Dawn opens by criticizing new FDA restrictions on simultaneous COVID and flu vaccinations, calling out vaccine regulator Vinay Prasad for creating artificial shortages. She explains that while no formal studies test multiple vaccines together, decades of safe practice demonstrate effectiveness. The FDA's requirement for separate testing ignores practical evidence and threatens vaccine supply chains during critical flu season. She discusses Oregon research suggesting adults may not need tetanus boosters every 10 years, but warns this misses the pertussis component. Dr. Dawn explains that acellular pertussis vaccines only provide 4-year immunity, making adult boosters essential to prevent whooping cough transmission to vulnerable infants. The focus should remain on pertussis prevention rather than tetanus economics. California, Oregon, and Washington announced a West Coast Health Alliance to maintain scientific integrity in public health policy amid federal changes. Dr. Dawn supports this states' rights approach to vaccination recommendations based on trusted medical organizations, expressing concern about potential vaccine shortages if manufacturers reduce production due to uncertain federal demand. An emailer shares an AI-generated analysis comparing tuberculosis and Lyme disease. Dr. Dawn critiques the AI's inaccuracies, noting that while tuberculosis may be present in 25% of people globally s the AI reports (she did not fact check this), the distribution is very uneven and cases in the US are low which we know since accurate latent TB testing is readily available in the US. She warns against AI's tendency to incorporate conspiracy theories due to a bias which favors frequency vs accuracy and emphasizes the importance of fact-checking AI-generated medical content. Dr. Dawn addresses FDA concerns about unregulated GLP-1 drugs, warning about counterfeit semaglutide and tirzepatide from questionable sources. She discusses dosing errors, non-FDA-approved compounds appearing in gray markets, and the rare but serious cancer risk for people with multiple endocrine neoplasia syndromes - affecting 1 in 30,000 people who could develop hormone-producing cancers. A caller asks about genetic testing for GLP-1 cancer risk. Dr. Dawn explains that complete genome testing costs around $1,000 and requires professional interpretation. She discusses the economic challenges of testing 30,000 people to prevent one cancer case, while acknowledging that obesity's health risks generally outweigh the small cancer risk for most patients. She examines FDA challenges in approving MDMA for PTSD treatment, explaining the "Catch-22" of blinding studies when drugs cause obvious consciousness changes. Dr. Dawn describes how psychedelic research faces unique obstacles requiring 8-10 hour supervised sessions with therapists, making traditional double-blind studies nearly impossible to conduct properly. An emailer asks about B vitamin effects on brain and heart health. Dr. Dawn warns about high-dose biotin interfering with thyroid tests and troponin levels used to diagnose heart attacks. She explains how B12 deficiency affects 40% of people over 80, recommending methylmalonic acid testing for accurate assessment rather than standard blood levels. She discusses research showing coastal living extends life expectancy by over a year compared to inland areas, attributed to cleaner air and better recreational opportunities. However, living near inland waterways may slightly decrease lifespan due to flood risks and environmental factors, suggesting ocean proximity specifically provides health benefits.

Broadcast from KSQD, Santa Cruz on 8-28-2025: Dr. Dawn opens with concerning research about PFAS (forever chemicals) found in feminine hygiene products. Chinese and American studies reveal significant concentrations in paper diapers, sanitary pads, and especially period underwear, with some products containing up to 77,000 parts per million. These compounds can absorb through skin and never break down in the environment, raising health concerns for products used in intimate contact. She shares research on vitamin K (MK7) for nocturnal leg cramps in older adults. A study of people 65 and older showed that 180 micrograms of menaquinone-7 reduced cramp episodes by half over two months while placebo group episodes doubled. This form of vitamin K also helps direct calcium to bones rather than arteries when taking calcium and vitamin D supplements. Dr. Dawn explains how gut bacteria are evolving to digest food thickeners like guar gum found in ketchup, salad dressing, and toothpaste. Previously considered non-digestible, these cellulose-based compounds are now being broken down by bacterial enzymes that develop when people eat high-fiber diets, potentially adding hidden calories to processed foods beyond what labels indicate. An emailer asks about Botox brain effects after reading a study in Advanced Science. Dr. Dawn critiques the research methodology, explaining that the organoid model using fetal cells doesn't replicate real-world conditions. She argues the cosmetic doses used are orders of magnitude smaller than the doses used in the study. The study concentrations are much higher than doses used in even the most aggressive therapeutic applications and concludes the study doesn't provide compelling evidence for brain toxicity concerns. Another emailer inquires about myalgia encephalomyelitis/chronic fatigue syndrome genome research. Dr. Dawn explains that while GWAS studies identifying eight genetic loci are scientifically interesting, they don't provide practical diagnostic tools or treatment insights. She notes the resemblance of ME/CFS to long COVID and describes the hallmark symptom of post-exertional malaise lasting days after activity. Dr. Dawn presents encouraging dementia prevention research showing Mediterranean diet benefits. The study found 13% reduced dementia risk overall, with 25% reduction for those improving adherence. Most significantly, people with the high-risk APOE4 gene variant showed the greatest protective effect from eating leafy vegetables, fish, whole grains, and limiting processed foods. She provides an extensive discussion of hormone therapy for mental health, criticizing the medical field's neglect of hormonal causes of depression and anxiety. Dr. Dawn explains how 35% of men over 45 are testosterone deficient and describes perimenopause effects on women's mental health, including 30% increased depression risk and 112% increased bipolar disorder risk during hormonal transitions. Dr. Dawn criticizes Gameday men's health clinics for exploitative practices, describing their "man cave" marketing approach and expensive injection protocols. She explains how normal testosterone production involves daily mini-spikes rather than weekly injections, and discusses clomiphene citrate as an alternative that can improve both testosterone levels and fertility without suppressing sperm production. She concludes with a cautionary tale about imaging studies, describing a patient whose X-ray showing arthritis led to activity restrictions that may have worsened her condition. Dr. Dawn emphasizes that movement and weight-bearing exercise are crucial for joint health, even when imaging shows degenerative changes. She warns against letting scans dictate treatment over clinical symptoms and urges a "physical therapy first" approach.

Broadcast from KSQD, Santa Cruz on 8-21-2025: Dr. Dawn opens with disturbing research linking respiratory infections to breast cancer reactivation. Studies show increased breast cancer deaths during COVID beyond screening delays, suggesting viral infections may awaken dormant cancer cells through inflammatory signals. Mouse models demonstrate that influenza infection can increase metastatic burden up to 1000-fold by triggering neutrophil extracellular traps that act as growth signals for sleeping cancer cells. She covers neuroimmune crosstalk in lung fibrosis research, where mice lacking pain receptors developed worse scarring when exposed to lung injury. The absence of pain signals failed to trigger natural inflammation suppressors, leading to increased neutrophil activity and inflammatory nets that contributed to tissue damage. New food spoilage detection technology uses pH-sensitive dyes in packaging that fluoresce or change color when bacterial metabolism produces acids. This could prevent foodborne illness from contaminated deli meats and dairy products by providing visual warnings before consumption, particularly important for high-risk foods like lunch meats and mayonnaise. Dr. Dawn warns about diquat replacing glyphosate in Roundup products, potentially creating 200 times more toxicity. The new compound suppresses gut lining proteins, creating leaky gut and allowing bacterial toxins into the bloodstream, while causing permanent kidney, liver, and lung damage. Most countries have banned diquat, but it remains available in American stores. Research reveals that lactose intolerance can cause intense nightmares through gut-brain connections. Montreal studies found that people with dairy sensitivity experience more frequent, distressing dreams that improve significantly when dairy is eliminated from their diet. The mechanism likely involves gastrointestinal discomfort causing microarousals that make dreams more vivid and memorable. She describes revolutionary remote-controlled probiotics combining genetically modified E. coli with pill cameras. These bacterial robots can detect inflammation, produce therapeutic compounds on command, and communicate through bioluminescence. Applications include targeted inflammatory bowel disease treatment where bacteria manufacture anti-TNF nanobodies when activated by LED signals from swallowed capsules. An emailer with recurring diverticulitis asks about surgical options versus dietary management. Dr. Dawn explains the structural causes of diverticular disease and the vicious cycle created by repeated antibiotic treatments that damage gut microbiomes. She emphasizes the importance of dramatically increasing fiber intake and addressing underlying leaky gut issues that may contribute to the condition. A caller asks about foods for better bowel movements while managing diabetes and taking Wegovy. Dr. Dawn recommends ground flaxseed mixed into various foods and weekly preparation of roasted root vegetables for someone with limited cooking skills. The conversation becomes personal as the caller expresses concerns about housing security and healthcare access during uncertain political times. New microplastic research reveals how these particles accumulate bacteria, viruses, and toxins in biofilm "coronas" that enhance their harmful effects. Different plastic types carry varying electric charges affecting where they travel in the body. Breakthrough laser detection methods now allow precise identification and tracking of specific plastic polymers in tissues, enabling better research on health impacts. Dr. Dawn discusses advances in CAR-T cell therapy for multiple myeloma, sharing positive results from her husband's recent treatment. New research suggests injecting lipid nanoparticles containing CAR DNA instead of removing T-cells for laboratory modification, potentially making this therapy much cheaper and more accessible while maintaining effectiveness for blood cancers.

Broadcast from KSQD, Santa Cruz on 8-14-2025: Dr. Dawn shares the story of Tim Fried, a construction worker who deliberately exposed himself to 850 snake venom doses over 18 years to build immunity. An immunologist developed antivenom from Fried's antibodies that neutralizes venom from 19 deadly snake species, potentially saving thousands of lives annually from snakebite deaths. She describes cuttlefish sign language research revealing four specific arm movements. The cuttlefish respond to videos and water vibrations from these signs, suggesting complex communication abilities rather than simple mimicry, potentially comparable to octopus intelligence. New research challenges the assumption that Neanderthals were hyper-carnivores. While bone nitrogen levels suggested a meat-only diet, dental evidence showed plant consumption. Researchers now theorize Neanderthals ate maggots from rotting meat, which contain 43% more nitrogen than flesh and would explain the contradictory evidence between bone chemistry and tooth wear patterns. CPR guidelines may soon from the traditional ABC approach (airway, breathing, circulation) to focusing immediately on chest compressions. Research on 45 collapsed athletes showed that 27 who received inappropriate airway clearing died or remained comatose, while three who received immediate rapid chest compressions survived with potential for rehabilitation. The recommendationcould become 100-120 compressions per minute without preliminary airway management. Dr. Dawn presents reassuring statistics about spinal abnormalities in pain-free adults over 60. MRI studies show 90% have disc degeneration, 80% have disc bulges, and 40% have protrusions - yet these individuals have no back pain. This raises questions about attributing back pain to imaging findings when so many similar abnormalities exist in asymptomatic people. Australian cockatoos have learned to operate drinking fountains for entertainment rather than necessity. Researchers observed 70 birds attempting and 40 successfully using fountains, waiting in organized lines and taking turns, despite easier water sources being available nearby. An emailer asks about Essiac tea for cancer prevention. Dr. Dawn explains this herbal blend of burdock root, Indian rhubarb, sheep sorrel, and slippery elm shows promise in laboratory studies but lacks quality human research. While not harmful, no studies demonstrate reduced cancer recurrence rates, though the antioxidant properties may provide general health benefits. Another emailer inquires about lithium supplements for Alzheimer's prevention. Dr. Dawn discusses research showing lower brain lithium levels in Alzheimer's patients and how amyloid plaques trap lithium. Studies suggest lithium orotate (unlike lithium carbonate) isn't absorbed by plaques and may help memory in mice. Low-dose lithium orotate appears safe and mildly calming for humans. Groundbreaking research shows exercise dramatically improves colon cancer survival. A study of 900 patients found the exercise group had 80% five-year disease-free survival versus 74% in controls, with 40% reduced death risk. The intensive program required 10 METs weekly exercise with behavioral support sessions over three years. Dr. Dawn explores coffee's health benefits, noting humanity consumes 2 billion cups daily. Multiple studies show moderate consumption (3-4 cups) reduces breast cancer risk in postmenopausal women and slows Parkinson's progression. Compounds like cafestol and chlorogenic acids provide anti-inflammatory and antioxidant effects, though benefits disappear when adding significant cream or sugar. She warns about Chikungunya outbreaks in China affecting over 8,000 people. This mosquito-borne illness causes severe bone pain and can spread through blood transfusion. With increased global travel and climate change expanding mosquito ranges, Dr. Dawn emphasizes the importance of volunteering travel history to healthcare providers when presenting with fever and body aches.

Broadcast from KSQD, Santa Cruz on 8-07-2025: Dr. Dawn opens with groundbreaking news about the first successful islet cell transplant for type 1 diabetes without immunosuppression. A 42-year-old man received gene-edited donor cells that were modified to avoid immune rejection by removing tissue compatibility markers and adding protective proteins. The transplanted cells in his forearm began producing insulin autonomously, reducing his A1C by 42% over 12 weeks. This breakthrough could lead to off-the-shelf diabetes treatments without the cancer and infection risks of immunosuppressive drugs. She critiques a case where a patient was prescribed an expensive new osteoporosis drug without trying conservative treatments first. Dr. Dawn explains how this monoclonal antibody works by blocking sclerostin, essentially cutting the brake lines on bone formation. While effective for severe osteoporosis, the drug increases heart attack and stroke risk by 15%. She advocates for trying lifestyle changes, exercise, and established treatments before resorting to newer, more dangerous medications with questionable risk-benefit ratios. A caller asks about a pustular rash on his upper body that his acupuncturist suggests might be related to COVID vaccination. Dr. Dawn addresses the distribution pattern of the rash, suggesting possible causes like hot tub folliculitis or topical allergies based on the location. She discusses how to evaluate rashes by their characteristics and distribution rather than jumping to vaccine-related conclusions. The caller inquires about vaccine development timelines and whether rushed approval during COVID might have missed serious side effects. Dr. Dawn explains that mRNA vaccine technology existed for 10 years before COVID and discusses her theory about vaccine side effects. She describes how spike proteins may temporarily deplete anti-inflammatory mechanisms, leading to flare-ups of existing conditions like eczema or arthritis, but emphasizes these effects are generally temporary and rebuilding occurs over time. Caller asks about RFK Jr.'s stance on vaccine research and the long-term implications of reducing vaccine development. Dr. Dawn provides a nuanced response about problems with the current vaccine system, including government-guaranteed markets that incentivize overproduction of vaccines. She discusses the evolution from essential vaccines for devastating diseases to newer vaccines for less critical conditions, explaining the economic forces that drive development and the resulting over-vaccination in healthy populations versus the need to protect vulnerable individuals. Dr. Dawn concludes with an innovative medical technology - a robot mattress designed to prevent pressure ulcers in immobilized patients. The mattress contains 1,260 independently controlled pistons that create undulating checkerboard patterns, alternating pressure points to stimulate blood flow. Research showed that brief high pressure followed by relief works better than constant low pressure, reducing pressure ulcer areas by 34 times compared to standard foam padding.

Broadcast from KSQD, Santa Cruz on 8-31-2025: Dr. Dawn interviews Katherine Rockwood and Jess Stevens, both registered nurses and breastfeeding advocates, during International Breastfeeding Month. They discuss community events including breastfeeding cupcakes at hospitals, partnerships with WIC (Women, Infants & Children) nutrition programs, and upcoming festivals featuring educational booths from various healthcare organizations. The conversation covers how these events aim to normalize breastfeeding and provide support resources for new mothers. The discussion explores milk donation programs, with Jess explaining her experience as a milk donor after becoming an "overproducer." They detail the screening process involving health questionnaires, blood tests, and milk quality checks before donation. The conversation addresses the high cost of donor milk at approximately $30 per ounce and insurance challenges, highlighting cases where fundraising helped provide donor milk for babies whose mothers couldn't breastfeed due to medical conditions like cancer. Dr. Dawn comments that breastfeeding a baby is like giving them a $100.00 restaurant meal daily. Katherine and Jess explain the superior benefits of breast milk over formula, particularly for premature babies who face risks like necrotizing enterocolitis from formula feeding. They discuss how the mother's breast milk composition automatically adjusts it's content for premature infants and how there is a 28-day window for establishing milk supply that affects long-term breastfeeding success. The nurses describe their support programs, including Katherine's "Baby Talk" group meetings where experienced mothers help newcomers learn breastfeeding techniques. They explain how group settings provide encouragement and demonstrate proper latching through observation and imitation. The discussion includes practical tips like playing jazz music and creating calm environments to facilitate milk letdown, drawing from Katherine's background in jazz clubs. Dr. Dawn explores the science behind breast milk, including human milk oligosaccharides that feed beneficial gut bacteria and establish healthy microbiomes. The conversation covers how breast milk changes throughout the day, with higher melatonin levels in evening milk, and how the antibody percentage composition shifts when babies are sick. Amazingly, breast milk becomes more yellow in color due to increased antibodies. They discuss how milk adapts for different aged children and even changes caloric content based on baby's gender with males receiving 25% more calories. The discussion addresses workplace and societal challenges for breastfeeding mothers, including the need for proper lactation rooms and supportive employers. They mention legal requirements for lactation spaces in California government buildings and the particular challenges faced by agricultural workers who lack adequate facilities. The conversation emphasizes the importance of community support and reducing guilt for mothers who cannot breastfeed. Dr. Dawn then shares statistics showing increasing breastfeeding rates, with 83.8% of babies receiving some breast milk and 25% exclusively breastfed for six months. The discussion covers additional maternal benefits including reduced breast cancer risk through complete breast tissue maturation, improved bone health through enhanced calcium absorption during breastfeeding, and natural birth control effects. They conclude by encouraging any amount of breastfeeding while supporting mothers who cannot breastfeed for various reasons.

Broadcast on KSQD, Santa Cruz on 7-24-2025: An emailer from Israel asks about mouth taping for sleep benefits, prompting Dr. Dawn to review a comprehensive study examining social media claims. She discusses the limited evidence base for most purported benefits like better sleep, oral health, and reduced snoring. The research reveals only mild sleep apnea showed meaningful improvement, while most other claims lack scientific support despite widespread promotion on social media platforms. Dr. Dawn reports on American scientists fleeing to France due to research funding cuts and political pressures. She describes how 300 American researchers have applied to just one French university, citing eliminated grants and demands to justify their basic science work. The brain drain parallels Europe's post-WWII exodus to America, but now affects climate research, gender studies, biology, and even NASA astrophysics programs. She introduces Salsalate, an aspirin-related drug from 1876 being reconsidered for diabetes treatment. Dr. Dawn explains how this salicylate works through anti-inflammatory pathways to reduce insulin resistance. Recent trials show promising results for glucose control and metabolic improvements, potentially offering an older, affordable alternative to newer diabetes medications. Dr. Dawn describes breakthrough surgical robot technology that successfully removed organs without human guidance. The system uses dual AI components for vision and instrument control that communicate with each other to correct mistakes. She notes the progression toward live animal testing as the next development phase. She explores revolutionary nanobots based on tiny algae cells that can navigate the human body for targeted drug delivery. These microscopic robots use flagella for movement and can be guided by magnets and ultrasound to reach specific organs like kidneys. The technology offers potential for precise chemotherapy delivery while avoiding healthy tissues. An emailer questions gabapentin's connection to cognitive decline after being prescribed the medication for sleep. Dr. Dawn challenges the study's methodology, noting that early dementia symptoms include insomnia, which leads to sleep medication prescriptions. She argues the correlation may reflect pre-existing cognitive decline rather than drug-induced impairment. Dr. Dawn presents alternatives to knee replacement surgery for patients hesitant about major procedures. She details innovative nerve ablation techniques that rewire pain signals by connecting sensory nerves to motor nerves, potentially providing permanent relief. Additional options include radio frequency ablation and blood vessel embolization to reduce inflammation-related pain. She highlights Alice Walton's new medical school in Arkansas focusing on preventative medicine and whole-person care. The curriculum emphasizes lifestyle factors, community service, and includes art training to develop empathy and observation skills. Dr. Dawn praises this approach as addressing the gap between medical education's biological focus and the behavioral causes of premature death.

Broadcast from KSQD, Santa Cruz on 7-17-2025: Dr. Dawn interviews Dr. Drew Richard, a first-year resident at Dominican Santa Cruz Family Medicine Residency. Dr. Richard discusses his motivation to bridge socioeconomic health disparities and his experience creating educational cooking episodes featuring cultural dishes from medical students. He explains his philosophy that medicine should help people cultivate compassion and his belief in the fundamental capacity for human goodness. The conversation explores the evolution of medical training and communication skills. Dr. Dawn contrasts today's team-based collaborative approach with the hierarchical, authoritarian medical culture of the past. They discuss how modern medicine emphasizes interprofessional collaboration, with Dr. Richard noting improved learning environments where faculty are more forgiving of mistakes while maintaining high standards for patient safety. A caller asks about functional medicine's approach to intangible factors like intention, purpose, attitude, energy, and alternative therapies like sound healing. Dr. Dawn explains the functional medicine matrix that places mental, emotional, and spiritual aspects at its center, discussing how these factors influence disease response and treatment outcomes. She describes the body's electrical field and energy medicine principles from her acupuncture practice. Dr. Richard addresses the caller's question about sound healing, suggesting that practitioners frame these concepts in familiar terms rather than using unfamiliar terminology. He recommends starting conversations about therapeutic music by asking patients about their favorite songs rather than immediately introducing concepts like sound baths, making these healing modalities more accessible and less intimidating. The discussion shifts to music's neurological benefits, with Dr. Dawn citing research showing that singing and music-making promote brain health and neuroplasticity. Studies demonstrate that piano practice increases gray matter, improves cognitive flexibility, and enhances auditory working memory in older adults. They explore how music engagement, whether through listening or active participation, releases dopamine and provides emotional regulation benefits. Dr. Richard shares his personal musical background as a drummer and discusses the bonding effects of group music-making. Dr. Dawn describes her experiences with choral singing and four-part harmony, explaining how shared musical vibrations create feelings of communion and connection. They explore how music affects the body's vibrations and blood flow, touching on everything from opera to movie soundtracks. The conversation turns to Dr. Richard's surfing experiences as part of his residency cohort's wellness activities. He describes overcoming ocean fears and discovering unexpected joy in the sport, noting how the entire residency class has embraced surfing as both exercise and bonding experience. Dr. Dawn mentions the conductor paradox - how orchestra conductors live longer than expected despite their lifestyle habits, attributing this to the cardiovascular benefits of continuous arm movement. In a concluding segment. Dr. Dawn presents research from the University of Pittsburgh showing how exercise protects against cancer through microbiome effects.

Broadcast from KSQD, Santa Cruz on 7-10-2025: Dr. Dawn responds to an email about lion's mane mushroom blood thinning properties. Lion's mane contains hericenones that inhibit platelet aggregation but promote nerve cell growth. People on blood thinners like Eliquis or those with bleeding disorders should stop these supplements before surgery. She recommends lion's mane for cognitive preservation effects despite bleeding risks, emphasizing the need to balance benefits versus risks. An emailer asks about Fatty15 (C15:0 pentadecanoic acid) supplements marketed for longevity. Dr. Dawn finds promising research, however, most studies are in animals with limited human data. She warns against over-supplementation and recommends food-first approaches, suggesting cheaper alternatives like berberine may provide similar benefits. A visiting guest asks about continuing L-arginine after blood pressure normalized. Dr. Dawn recommends continuing L-arginine as it helps produce nitric oxide and prevents age-related arterial stiffening. She explains how blood vessel elasticity decreases with age, creating feed-forward cycles leading to permanent hypertension. The guest also asks about iodine safety - Dr. Dawn confirms 1mg daily is safe, noting Japanese populations consume up to 4mg daily without problems. Another visiting guest inquires about memory-boosting supplements (nootropics). Dr. Dawn identifies nicotine and caffeine as effective options, mentioning she uses nicotine patches for test-taking focus. She discusses lion's mane as effective for cognitive enhancement and coffee blends combining both ingredients. A caller asks about tirzepatide (Mounjaro) for weight loss at age 73, concerned about muscle loss. Dr. Dawn emphasizes the importance of branched-chain amino acids and 20-30 grams of protein before exercise for older adults to build muscle protein. She explains younger people can build muscle while fasting, but older adults need circulating protein during exercise to activate muscle-building DNA. She recommends alternating upper and lower body workouts and checking testosterone levels. Another caller asks about rapid resting pulse rate (80-100 bpm) at age 74. Dr. Dawn suggests checking blood pressure, as low blood pressure can cause compensatory heart rate increases. She explains age-related changes in blood vessel reflexes that can cause blood pooling in legs and orthostatic changes. The caller also complains about pharmaceutical advertising, prompting Dr. Dawn to criticize direct-to-consumer drug marketing for creating artificial needs through emotional manipulation. Dr. Dawn warns against P-Tau217 blood testing for Alzheimer's screening, calling it inadequate for general population screening. The test has poor predictive value below level 10, creating many false positives in low-risk populations. She criticizes associated drugs like donanemab (Kisunla) for severe side effects including brain swelling and hemorrhage. Instead, she recommends lifestyle interventions: exercise, stress control, adequate sleep, reduced alcohol and sugar intake for memory concerns. She criticizes FDA approval of a new blood test for colon cancer screening with 83% sensitivity for detecting existing cancers but poor sensitivity for precancerous polyps. Dr. Dawn criticizes this as inadequate screening since it detects cancer after "the horse has left the barn" rather than preventing it. In closing remarks with her impromptu guests, Dr. Dawn addresses a question about intermittent fasting and exercise timing. She explains that exercising while fasting provides cardiovascular benefits but won't build muscle mass in older adults. She recommends bioimpedance analysis testing to track lean body mass annually in seniors and emphasizes the importance of progressive resistance training to prevent age-related muscle loss.

Broadcast from KSQD, Santa Cruz on 7-03-2025: Dr. Dawn responds to an email about vitamin D and statin interactions, explaining how statins may prevent vitamin D's longevity benefits by interfering with CoQ10 production. She references a study showing vitamin D preserved telomeres and prevented aging over 3-4 years, but benefits disappeared in statin users. For borderline high LDL, she recommends testing for large versus small particles and oxidized LDL rather than treating with statins or red yeast rice. Red yeast rice may also block CoQ10 production, potentially negating vitamin D benefits. She discusses the critical problem of overmedication in elderly patients through a story of a 75-year-old taking 21 prescription drugs who improved dramatically when reduced to eight medications. Multiple specialists practicing standard care in isolation create dangerous polypharmacy without coordination. HIPAA privacy laws prevent medication sharing between providers, while electronic medical records remain siloed and incompatible. England's pilot program will provide whole genome screening for every newborn within 10 years, assessing hundreds of disease risks and enabling personalized medicine. While beneficial for identifying genetic disorders and drug metabolism variations like 2D6 mutations affecting tamoxifen effectiveness, Dr. Dawn expresses concern about government surveillance implications. Unlike voluntary phone tracking, this represents involuntary comprehensive genetic monitoring of citizens unable to provide informed consent. She describes alarming research showing cancer cells steal mitochondria from nerve cells by extending tubes and sucking out energy-producing organelles. This behavior helps cancer cells survive the hostile journey through bloodstream during metastasis. Turbocharged cancer cells with stolen mitochondria generate more energy and survive better when subjected to physical stress mimicking bloodstream travel. Dr. Dawn explores the parasitic amoeba Entamoeba histolytica, which causes intestinal disease but can become invasive, liquefying organs through tissue destruction. The parasite kills cells without eating them immediately, then consumes fragments and displays stolen cellular proteins on its surface to fool the immune system, potentially leading to CRISPR-based treatments or targeted drugs. She discusses converting plastic waste into acetaminophen using modified E. coli bacteria. Researchers chemically degrade PET plastic into precursor molecules, then use bacterial enzymes to complete synthesis into paracetamol with 92% efficiency. This transforms environmental waste into globally important medication, though she notes acetaminophen risks for regular drinkers due to toxic liver metabolites. MIT research reveals that AI writing assistance reduces brain engagement, memory, and sense of authorship. Students using ChatGPT showed lower neural connectivity in memory, attention, and executive function networks over four months. AI users retained less information and struggled to quote from their own essays. Dr. Dawn compares this to physical atrophy, emphasizing that cognitive challenge strengthens neural pathways like exercise strengthens muscles. She warns about fluoroquinolone antibiotics causing aortic aneurysm ruptures, in addition to known risks of tendon ruptures and retinal detachment. People with dilated aortas, hypertension history, or smoking should avoid these drugs entirely. This represents new information that wasn't widely known among primary care physicians, highlighting the importance of continuing medical education. Research shows celecoxib (Celebrex) cuts colon cancer recurrence rates in half for patients with circulating tumor DNA, but provides no benefit without detectable residual disease. This anti-inflammatory drug appears to impair cancer's ability to thrive in metastatic conditions. The finding supports using circulating tumor DNA testing to identify who needs targeted therapy rather than treating everyone. Dr. Dawn concludes with surprising research showing chronic inflammation during aging occurs only in industrialized societies. Studies comparing indigenous communities from Bolivian Amazon and Malaysia with populations from Italy and Singapore found inflammatory cytokines increase with age only in industrialized groups.

Broadcast from KSQD, Santa Cruz on 6-26-2025: Dr. Dawn opens with groundbreaking results from Vertex Pharmaceuticals' stem cell treatment for severe type 1 diabetes. The experimental therapy, Zimislecel, converts stem cells into pancreatic islet cells and infuses them into patients. In a 12-person study, 10 patients no longer need insulin after one year. The cells migrated to the liver and began producing insulin in response to glucose levels. Patients with hypoglycemic unawareness saw complete elimination of dangerous episodes after three months. However, patients must take lifelong immunosuppressive drugs to prevent rejection. The research represents 25 years of work by Harvard's Doug Melton. A caller asks about Keytruda treatment for melanoma. Dr. Dawn explains it's an immunotherapy drug targeting programmed death receptors that cancer cells hijack to evade immune response. The drug can cause serious immune overreactions but is standard for metastatic melanoma. Treatment protocols depend on cancer staging. For young patients with decades to lose, aggressive treatment is often justified despite risks. An email about morning arthritis pain leads to chronotherapy research discussion. Macrophages have energy levels that peak in the morning when inflammasome activation is quicker and more robust, explaining why arthritis pain is worst after overnight rest. Treatment timing could optimize anti-inflammatory medications by taking them at bedtime. Another email about eye irritation prompts diagnostic discussion. Dr. Dawn recommends examining for bacterial blepharitis before assuming food allergies and testing antihistamine drops. For elimination diets, common allergens include wheat, dairy, corn, soy, and peanuts. However, without other symptoms, food allergies are unlikely causes of isolated eye problems. Dr. Dawn explores advancing CAR-T cell therapy using RNA technology. Traditional therapy costs up to $500,000 per patient requiring lab reprogramming. New RNA-containing nanoparticles temporarily create antigen receptors for about one week. Mouse studies eliminated detectable tumors at highest doses. While effects are temporary, this could dramatically reduce costs and complexity. She discusses DNA forensics evolution from O.J. trial era to current technologies. New paleogenomics technology can analyze fragmented DNA from hair, previously considered unusable. Mitochondrial DNA analysis can definitively exonerate suspects. This led to Charles Fane's release after 17 years on death row when hair evidence proved innocence and identified the actual perpetrator. Dr. Dawn introduces Barrett's esophagus screening replacing invasive endoscopy. Patients swallow a capsule containing a compressed sponge that expands in the stomach and is pulled out via string, collecting esophageal cells. The test identifies abnormalities with 100-fold increased cancer risk when positive and 98% accuracy when negative, allowing targeted endoscopy only for high-risk patients. She concludes discussing body composition analysis superiority over BMI. Studies found overweight BMI showed 3.6 times higher heart disease risk, while large waist circumference showed four times higher risk. However, BMI had no significant relationship with overall mortality. Dr. Dawn advocates for bioimpedance analysis devices to measure body fat percentage and track muscle loss.

Broadcast from KSQD, Santa Cruz on 6-19, 2025: Dr. Dawn presents the VITAL study evidence showing 2,000 IU daily vitamin D prevents telomere shortening in immune cells, effectively slowing biological aging by three years. Groundbreaking mouse research reveals maternal iron deficiency can alter fetal sex development. When iron levels dropped 60%, the SYR gene controlling male development switched off, causing 6 of 39 XY offspring to develop ovaries instead of testes. Thus, mammalian sex can be influenced by environmental factors just like in amphibians and fish. Dr. Dawn connects this to gender identity questions, advocating supporting puberty blockers based on their 30-year safety record. Dr. Dawn advocates widespread CPR and AED training after describing a successful Buffalo airport rescue. With 350,000 annual out-of-hospital cardiac arrests and 90% fatality rates, immediate AED intervention can triple survival odds. She promotes the Pulsepoint app registering 185,000 AEDs and praises countries like Norway achieving 90% population CPR training through driver's license requirements. Post-Roe v. Wade data shows vasectomies doubled in men aged 19-26 while tubal ligations rose 70%, mostly in abortion-ban states. Dr. Dawn notes the irony that policies intended to increase births prompted widespread voluntary sterilization. Environmental concerns from January 2025 Moss Landing battery fire and LA wildfires highlight toxic contamination from burning lithium, plastics, and building materials. She advocates fire-resistant landscaping and home hardening, noting some fire-resistant homes survived while surroundings burned. British research shows pet ownership provides life satisfaction equivalent to $90,000 annual income boost. Dr. Dawn experiences this firsthand, noting pets provide family-like benefits without complex interpersonal dynamics. Sleep study reveals 15 minutes additional nightly sleep improves cognitive performance in tweens. Children sleeping 7.25 versus 7.10 hours showed better academics and larger brain volumes, though Dr. Dawn questions causation versus correlation. Mayo Clinic identified Interleukin-23 as a reliable cellular senescence biomarker across multiple tissues. Natural compounds like quercetin, fisetin, and luteolin can reduce these aging markers, supporting her dietary supplementation philosophy.

Broadcast from KSQD, Santa Cruz on 6-12-2025: Dr. Dawn opens with alarming news about NIH budget cuts devastating cancer research just as breakthrough CAR-T cell therapy shows promise for gastrointestinal cancers. This personalized immunotherapy extracts patients' T cells, engineers them to target specific cancer antigens, and makes them essentially immortal before reinfusion. While previously successful only for blood cancers like leukemia and lymphoma, researchers achieved tumor shrinkage in 25% of solid GI tumor patients. However, devastating layoffs forced removal of two patients from trials due to staff shortages and supply chain disruptions. Dr. Dawn emphasizes how pregnancy can worsen hidden cancers due to immune suppression, explaining why aggressive metastasized cancers often appear shortly after childbirth. Dr. Dawn takes a call from Bob about concerning forehead growths his dermatologist examined. She speculates they're likely seborrheic keratoses - benign, stuck-on appearing growths common in sun-exposed areas that look like crumpled brown paper "spit-wads". These aging-related changes are harmless and can even be picked off, though she warns against repeatedly traumatizing any skin area as this increases cancer risk through accumulated DNA damage. She explains how repetitive trauma in occupational settings creates statistically higher cancer risks, comparing it to filling a bingo card of cellular errors. She addresses an email about Joe Tippens' cancer cure protocol involving fenbendazole, an anti-parasitic drug. Dr. Dawn explains this viral social media phenomenon began when Tippens claimed his lung cancer was cured by fenbendazole, but he was simultaneously receiving Keytruda immunotherapy at MD Anderson. The story spread rapidly in South Korea, causing pharmacy shortages. Unvalidated internet health information can spread dangerously. Dr. Dawn compares it to old-fashioned medicine show scams. trend Dr. Dawn warns about a recent vitamin B6 toxicity misdiagnosis trend affecting her patients who were told they had dangerous levels of B6 despite lacking neuropathy symptoms. Accuracy requires fasting 12 hours before blood draws, otherwise creating false elevations from recent vitamin consumption. More critically, she alerts listeners about biotin(Vitamin B7) interference with laboratory tests using biotin-streptavidin techniques. High-dose biotin supplements are often used in hair and nail health growth formulas. This can falsely alter tests for thyroid hormones, vitamin D, sex hormones, cortisol and dangerously, troponin levels that diagnose heart attacks. This could lead to missed myocardial infarctions in emergency rooms, potentially causing fatal outcomes. Dr. Dawn takes a call from Richard seeking information about a previous radio program guest. She guides him to use on-line resources at ksqd.org to find program details, pivoting into praise for libraries as community centers offering far more than internet access. She emphasizes libraries provide serendipitous discovery that algorithms can't match, encouraging people to explore their local library systems for events, historical collections, and personal assistance from knowledgeable librarians eager to help visitors navigate both physical and digital resources. She discusses the concerning trend of giving melatonin to children, calling it "the Grinch that stole children's bedtime." While used prescription-only for severe developmental disorders in Denmark and EU countries, American children receive melatonin gummies regularly, with one in five preteens using it occasionally. Dr. Dawn explains melatonin is a hormone affecting pancreas, heart, fat tissue, and reproductive organs still developing in children. Supplemental doses create blood levels 10 times higher than natural peaks, representing an uncontrolled medical experiment on developing brains and bodies. Poison control calls for melatonin ingestion increased 530% between 2012-2021, with one tragic case involving a three-month-old death where 20 melatonin bottles were found in the home. Dr. Dawn concludes by debunking food expiration date myths, explaining that Americans waste a third of food ($7 billion annually) due to misunderstanding labels. Most shelf-stable foods simply degrade in quality rather than becoming dangerous after printed dates. She notes acidic dairy products like yogurt resist bacterial contamination due to protective bacteria,and even surface mold can be scraped off safely. However, she emphasizes trusting expiration dates on lunch meats and deli products, which pose real listeria risks when stored improperly. California will soon simplify labeling laws to reduce confusion between quality and safety dates.

Broadcast from KSQD, Santa Cruz on 6-05-2025: Dr. Dawn answers an email about Dupuytren's contracture treatment, explaining her clinic experience using acupuncture anesthesia combined with Traumeel injections directly into palm nodules. She describes how this anti-inflammatory homeopathic compound, when injected into tendon sheaths, can break the cycle of fibrosis formation. Dr. Dawn explores fascinating quantum physics concepts involving collagen microstructure, water molecules, and hydrogen ion movement that may explain how acupuncture and homeopathy work through crystalline formations in collagen tubules. She discusses vitamin A's critical role in measles complications, explaining how deficiency dramatically increases risks of encephalitis and cardiac damage. Dr. Dawn covers two forms of dietary vitamin A - beta carotene from plants requiring enzymatic conversion, and vitamin A from animal products. She warns about vitamin A toxicity risks, particularly birth defects in pregnancy, while noting that typical American diets are adequate unlike vitamin D. Dr. Dawn examines vitamin D deficiency affecting 68% of children in a South Florida study, linking inadequate levels to bone health, immune function, and gut barrier integrity. She explains how vitamin D receptors throughout the body regulate cell differentiation, insulin secretion, and tight junction formation that prevents leaky gut syndrome. There are higher deficiency rates in darker-skinned populations and the historical context of rickets during industrialization when urban environments blocked sunlight exposure. She highlights revolutionary medical technology, the world's smallest pacemaker for newborns, half the size of a rice grain. This injectable device dissolves naturally after hearts self-repair, controlled by light-emitting patches communicating through the baby's skin. This breakthrough eliminates risky surgical removal procedures that caused complications, such as Neil Armstrong's death from pacemaker wire infections. Dr. Dawn discusses research showing shingles vaccination reduces dementia risk by 20%, particularly in women. She explains the natural experiment in Wales where universal healthcare created clear vaccination cutoff dates, allowing researchers to compare dementia rates. Dr. Dawn hypothesizes that cross-immunity against herpes viruses may protect brain tissue, noting even stronger protection with newer Shingrix vaccines compared to older Zostavax. She covers alarming increases in invasive Group A Streptococcus infections, with cases more than doubling from 2013 to 2022. Dr. Dawn explains how flesh-eating bacteria secretes enzymes that dissolve epithelial barriers in throats and lungs, allowing systemic spread that destroys tissue. She links rising cases to increasing diabetes and obesity rates that compromise immune function, noting devastating mortality rates approaching 10,000 deaths nationwide. Dr. Dawn celebrates a breakthrough antibiotic discovery of Lariocidin which works against highly drug-resistant bacteria through novel protein synthesis inhibition. She explains how antibiotic resistance spreads between bacterial species just like social media memes, emphasizing the urgent need for new treatments as 4 million people die annually from resistant infections. Dr. Dawn advocates for public funding since pharmaceutical companies avoid antibiotic development due to poor profit margins. She answers an email about Epstein-Barr virus detection, explaining its role in mononucleosis, Burkitt's lymphoma, and chronic fatigue syndrome. Dr. Dawn describes how EBV can remain dormant and reactivate during stress or immunocompromise, potentially triggering autoimmunity. She discusses similarities between EBV reactivation, Lyme disease, and long COVID, suggesting they may represent variations of the same inflammatory syndrome with different triggers. She explores the nocebo effect - how negative expectations worsen outcomes - and its amplification through social media. Dr. Dawn cites studies showing people warned about erectile dysfunction or altitude headaches experience these symptoms more frequently. She discusses recent phenomena like TikTok-induced tics and vaccine side effect amplification, warning that online health information creates dangerous nocebo loops that spread faster than traditional word-of-mouth.

Broadcast from KSQD, Santa Cruz on 5-30-2024 and 5-29-2925: Cognitive errors in medicine dismissing unusual presentations as psychological A case of Pediatric Autoimmune Neuropsychiatric disorders Associated with Streptococcal Infections (PANDAS) Anti-NMDA receptor encephalitis causing psychiatric symptoms Failures of genetic research to identify causes Need for integrating neurology and psychiatry; Importance of testing for antibodies and using MRI scans Detailed explanation of immune tolerance, peripheral tolerance, and the phenomenon of molecular mimicry in diseases like multiple sclerosis and celiac disease Importance of addressing root causes rather than just symptoms Historical context and current advancements in treating autoimmune diseases like type 1 diabetes, lupus, and multiple sclerosis using reprogrammed immune cells and iron oxide nanoparticles Explanation of how the liver filters blood and helps establish immune tolerance by processing cellular debris and antigens Advances in engineering regulatory T cells to target specific disease sites and calm inflammatory responses Exploration of new diagnostic tools and the potential of AI in understanding complex psychiatric conditions Detection of colds and other diseases by analysis of voice frequency patterns

Broadcast from KSQD, Santa Cruz on 5-22-2025: Dr. Dawn explores groundbreaking cancer research using high-throughput "digital twin" analysis to reverse colon cancer cells back to normal states, identifying three master molecular switches that can induce normal cell differentiation without killing the cancer cells, thus avoiding traditional chemotherapy side effects. She discusses remarkable results from Memorial Sloan Kettering showing 80% of patients with mismatch repair deficient tumors, including all 49 rectal cancer patients, saw complete tumor disappearance after six months of dostarlimab immunotherapy, with no recurrence at five years and minimal side effects. The program covers innovative CRISPR applications, including targeting previously "undruggable" cancer mutations like KRAS and BRAF by selectively degrading mutant RNA messages while preserving healthy genes, offering unprecedented precision in cancer treatment. Dr. Dawn explains a clever immunotherapy approach that disguises tumors as pig organs using Newcastle disease virus carrying alpha-gal enzyme, tricking the immune system into mounting fierce attacks against cancer cells, showing promising results in both monkey and human trials. She describes fascinating research using cryoshocked tumor cells as Trojan horses, where liquid nitrogen-treated cancer cells carrying CRISPR gene editing tools directly seek out tumors, offering superior targeting compared to injecting CRISPR. The show reveals how cancers create protective acid walls around themselves to repel immune cells, with individual cancer cells pumping lactic acid away from the tumor center to form pH 5.3 barriers that kill attacking CD8 T cells within hours. Dr. Dawn discusses breakthrough mRNA cancer vaccines for glioblastoma using patients' own tumor cells, showing rapid immune system activation within 48 hours and extending survival in both dogs and humans with this aggressive brain cancer. She explores the "flower code" mechanism where cancer cells gaslight healthy cells through epigenetic manipulation, expressing dominant "flower win" codes to overpower normal cells expressing "flower lose" codes in biological turf wars. The program addresses systemic problems in cancer classification, explaining how organ-based categorization delays access to effective treatments, with patients waiting years for drugs that could help based on molecular profiles rather than tumor location. Dr. Dawn concludes by highlighting medical discrimination against people with Duffy null phenotype, primarily affecting African Americans, whose naturally lower neutrophil counts lead to reduced chemotherapy doses and excluded clinical trial participation despite no increased infection risk.

Broadcast from KSQD, Santa Cruz on 5-15-2025: Dr. Dawn provides a comprehensive overview of bone health, describing bones as the "silent architects" of our bodies that require ongoing care and attention throughout life. She outlines key risk factors including family history of fractures, eating disorders, hormonal changes, digestive surgeries, and medication use, while explaining how DEXA scans measure bone density through T-scores and Z-scores, recommending the FRAX risk calculator as a superior predictive tool. She shares practical strategies like weight-bearing exercise and proper vitamin supplementation (D, K2, calcium) alongside explaining the roles of osteoclasts and osteoblasts in bone turnover and how medications influence this balance. She addresses a caller's question about strontium citrate and isoflavone supplements for bone health after cancer treatment, clarifying that these differ from problematic boron and suggesting C-telopeptide or N-telopeptide testing to verify bone turnover rates beyond DEXA results. The program discusses a promising non-hormonal male contraceptive called ADAM, a dissolvable hydrogel implant shown in preliminary trials to block sperm for up to two years without serious side effects. Dr. Dawn addresses misconceptions about autism, describing it as a spectrum with diverse manifestations, explaining its neurological basis in atypical brain pruning patterns, and emphasizing it as a complex genetic vulnerability to environmental events. She evaluates a listener email about a supplement for urinary incontinence and metabolic health, warning listeners about marketing tactics and insufficient evidence behind many commercial products. Dr. Dawn examines "Fatty 15," a pentadecanoic acid supplement marketed for metabolic health, noting that while some rodent studies show promise for insulin sensitivity and liver health, human evidence remains limited compared to well-established benefits of omega-3 fatty acids. Dr. Dawn shares news about Orforglipron, a new oral GLP-1 medication in pill form for diabetes and weight management that appears as effective as injectable versions like Ozempic.. The show concludes with information about innovative plant-based transparent paperboard, a cellulose-based material that biodegrades within 300 days while offering a safer and more sustainable alternative to conventional plastics.

Broadcast from KSQD, Santa Cruz on 5-08-2025: Dr. Dawn examines groundbreaking research on rising rates of early-onset colorectal cancer worldwide, explaining how researchers have identified a bacterial toxin called colibactin produced by specific E. coli strains that appears to cause early genetic mutations in cancer-controlling genes, potentially explaining why younger generations face significantly higher cancer risks. She discusses how modern medical practices like antibiotic overuse and cesarean deliveries may disrupt protective gut microbiomes, while diets low in fiber and high in animal fats create conditions where harmful bacteria thrive and damage the protective mucosal barrier, potentially exposing colon cells to cancer-causing mutations. Dr. Dawn explains fascinating research on transgenerational memory in C. elegans worms and mice, where learned aversions to specific odors are genetically passed down to offspring through epigenetic mechanisms involving methylation and RNA pathways, challenging traditional views on inheritance and suggesting implications for human genetics. Responding to an email about posterior tibial tendon disease (PTTD), she offers comprehensive management strategies including cross-massage with ice, proper footwear selection, careful stretching techniques, and anti-inflammatory approaches while cautioning against invasive procedures like steroid injections that might weaken tendons. She discusses promising research on rosemary's potential in Alzheimer's treatment, explaining how carnosic acid activates the NRF2 pathway that controls antioxidant proteins, with researchers developing a more stable chemical analog that reduced inflammation and improved memory in mouse models of Alzheimer's disease. Dr. Dawn provides updates on vaccination recommendations, noting that egg allergy questions are no longer needed before flu vaccines, pneumococcal vaccines are now recommended for all adults over 50, and explaining the small risk of Guillain-Barré syndrome with RSV vaccines compared to the much larger risk of RSV-related deaths. She shares information about a new hypertension risk calculator called PREVENT that reclassifies many patients to lower risk categories, potentially allowing 2.6 million Americans to manage their blood pressure through lifestyle changes rather than medication, particularly benefiting older women who face different risk profiles than men.