Medicine Redefined

EPISODE DESCRIPTION Is zone 2 really the secret to longevity? In part three of the training series, Dr. Altamash Raja and Dr. Darsh Shah dig into the cardio evidence: why the biggest drop in mortality comes from going from nothing to something, how much benefit sits beyond 150 minutes a week, and what the J-curve and athlete AFib data actually show. They question the zone 2 and Norwegian 4x4 hype, test wearable VO2 max estimates, and share a single-run rule for avoiding running injuries. TOPICS COVERED The floor and the ceiling: the 150/75-minute guideline, benefit out to 560–610 minutes a week, and why the least fit need more Nothing to something: the mortality curve and why even five vigorous minutes a week registers The J-curve revisited: no mortality penalty at high volumes, but a real AFib signal in some athletes Zone 2 and the Norwegian 4x4: what the evidence supports, and why consistency beats the "ideal" protocol Measuring intensity: heart-rate zones, chest straps vs. wrist devices, and how far off Apple Watch VO2 max can be Running injuries: why a single long run matters more than the 10% weekly-mileage rule RESOURCES & LINKS MENTIONED Studies Liang et al., Physical activity, fitness, and cardiovascular disease, BJSM (2026) (https://pmc.ncbi.nlm.nih.gov/articles/PMC13479690/) Potter et al., Physical activity and all-cause mortality in 594,000 US adults, Ann Epidemiol (2026) (https://pubmed.ncbi.nlm.nih.gov/42309274/) Lee et al., Physical activity intensity and mortality, Circulation (2022) (https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.121.058162) Schnohr et al., Dose of jogging and long-term mortality, JACC (2015) (https://pubmed.ncbi.nlm.nih.gov/25660917/) Newman et al., Atrial fibrillation in athletes, BJSM (2021) (https://pubmed.ncbi.nlm.nih.gov/34253538/) Storoschuk et al., Much Ado About Zone 2, Sports Medicine (2025) (https://doi.org/10.1007/s40279-025-02261-y) Helgerud et al., High-intensity intervals and VO2 max, Med Sci Sports Exerc (2007) (https://pubmed.ncbi.nlm.nih.gov/17414804/) Lambe et al., Apple Watch VO2 max validation, PLOS One (2025) (https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0323741) Frandsen et al., Identifying high-risk running sessions, BJSM (2025) (https://pmc.ncbi.nlm.nih.gov/articles/PMC12421110) Concepts & tools VO2 max (https://en.wikipedia.org/wiki/VO2_max) · Atrial fibrillation (https://en.wikipedia.org/wiki/Atrial_fibrillation) · Cooper test (https://en.wikipedia.org/wiki/Cooper_test) On-air corrections Liang's genetic analysis supported fitness lowering heart failure risk; it didn't test all-cause mortality. Moderate intensity is roughly 65–75% of max heart rate (ACSM), not 40–70%. The "subtract 10 for chronic medication" rule is from Phil Maffetone's 180-minus-age formula, an aerobic ceiling, not max heart rate. In Helgerud 2007, both interval protocols (15/15 and 4x4) beat steady-state training for VO2 max. The coronary-calcium overlap was Dr. Raja's hypothesis, not a Newman 2021 finding. FOLLOW US The Show Website: medicineredefined.com (https://medicineredefined.com) Instagram / X: @medredefined (https://instagram.com/medredefined) Dr. Altamash Raja Instagram: @draltraja (https://instagram.com/draltraja) LinkedIn: Altamash Raja (https://www.linkedin.com/in/altamash-raja-do-rmsk-cscs) Refining Health & Performance (https://refininghealthrx.com) Dr. Darsh Shah Instagram: @doctor.darsh (https://www.instagram.com/doctor.darsh/) LinkedIn: doctordarsh (https://www.linkedin.com/in/doctordarsh/) Want a clear plan for longevity, performance, and staying active with fewer setbacks? Work with Dr. Raja directly. Book at refininghealthrx.com (https://refininghealthrx.com).

EPISODE DESCRIPTION How many hard sets does muscle actually need, and does the weight on the bar matter? In part two of the training series, Dr. Altamash Raja and Dr. Darsh Shah work through the 2026 ACSM position stand: strength and size as two goals with two prescriptions, why effort matters more than load for growth, and how little it takes to maintain what you've built. They audit their own programs live, then make the case for building a training floor around your real constraints before adding anything. TOPICS COVERED Strength vs. hypertrophy: two goals, two prescriptions, and why you need to know which one you're chasing What the 2026 ACSM position stand asks for: heavy loads for strength, at least 10 hard sets per muscle per week for size, effort over load Progressive overload, momentary failure vs. 2–3 reps in reserve, and correcting the "80% = RPE 8" slip from part one A live audit of both hosts' programs with fractional set counting, plus the Nordic hamstring evidence debate The maintenance dose: keeping strength and size on as little as one session a week, and what older adults need Allostatic load, rest intervals, full-body vs. split training, and why you build the floor first, then add RESOURCES & LINKS MENTIONED Studies Currier et al., ACSM Position Stand on Resistance Training Prescription, Med Sci Sports Exerc (2026) (https://doi.org/10.1249/MSS.0000000000003897) Pelland et al., The Resistance Training Dose Response, Sports Medicine (2026) (https://link.springer.com/article/10.1007/s40279-025-02344-w) van Dyk et al., Nordic hamstring exercise halves the rate of hamstring injuries, BJSM (2019) (https://www.mendeley.com/catalogue/3a292a92-fca1-3d9b-9fb2-654d278d38b9/) Impellizzeri et al., Reappraisal: Nordic hamstring effect inconclusive, J Clin Epidemiol (2021) (https://www.semanticscholar.org/paper/8938af53d1760cb9d5aa328dc663059bdd9f7ff5) Spiering et al., The minimal dose of exercise to preserve endurance and strength, J Strength Cond Res (2021) (https://pubmed.ncbi.nlm.nih.gov/33629972/) Singer et al., Inter-set rest intervals and muscle hypertrophy, Front Sports Act Living (2024) (https://www.frontiersin.org/journals/sports-and-active-living/articles/10.3389/fspor.2024.1429789/full) Zhang et al., Resistance training volume and mortality, BJSM (2026) (https://doi.org/10.1136/bjsports-2025-110503) McEwen and Stellar, Stress and the individual, Arch Intern Med (1993) (https://pubmed.ncbi.nlm.nih.gov/8379800/) Concepts & tools Progressive overload (https://en.wikipedia.org/wiki/Progressive_overload) · One-repetition maximum (https://en.wikipedia.org/wiki/One-repetition_maximum) · RPE (https://en.wikipedia.org/wiki/Rating_of_perceived_exertion) Allostatic load (https://en.wikipedia.org/wiki/Allostatic_load) · DOMS (https://en.wikipedia.org/wiki/Delayed_onset_muscle_soreness) · Nordic hamstring curl (https://www.physio-pedia.com/Nordic_Hamstring_Training) On-air corrections Allostatic load was coined by McEwen and Stellar in 1993, not the 1930s or 40s. In Zhang 2026, the lowest mortality was in people combining resistance training with aerobic activity. These are observational cohort data. FOLLOW US The Show Website: medicineredefined.com (https://medicineredefined.com) Instagram / X: @medredefined (https://instagram.com/medredefined) Dr. Altamash Raja Instagram: @draltraja (https://instagram.com/draltraja) LinkedIn: Altamash Raja (https://www.linkedin.com/in/altamash-raja-do-rmsk-cscs) Refining Health & Performance (https://refininghealthrx.com) Dr. Darsh Shah Instagram: @doctor.darsh (https://www.instagram.com/doctor.darsh/) LinkedIn: doctordarsh (https://www.linkedin.com/in/doctordarsh/) Want a clear plan for longevity, performance, and staying active with fewer setbacks? Work with Dr. Raja directly. Book at refininghealthrx.com (https://refininghealthrx.com).

Is your training week built on evidence, or on habit? In part one of a five-part series, Dr. Altamash Raja and Dr. Darsh Shah unpack the American College of Sports Medicine's 2026 resistance training position stand: what didn't consistently matter (training to failure, machines versus free weights, complex periodization) and what did, depending on the goal. They lay out four training qualities, three questions to ask before writing a program, and a realistic week for people who already train, plus a fallback for when life interferes. TOPICS COVERED What the 2026 ACSM position stand found on failure training, equipment choice, and periodization, and the goal-specific variables that do matter RPE versus reps in reserve (RIR), and why "close to failure" is harder to judge than it sounds The four qualities: aerobic fitness, strength, power, and mobility and stability, with everyday examples Three questions before writing a program: what to improve, what you can repeat, and how you'll know it's working A sample 45–60 minute training week, Darsh's HYROX prep, and what group classes like Pilates and F45 leave out How Dr. Raja adapts his own training around surgery and joint limitations, allostatic load, and the two-week planning assignment RESOURCES & LINKS MENTIONED Studies Currier et al., ACSM Position Stand: Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults, Medicine & Science in Sports & Exercise (2026). Strength: at least 80% of 1RM, 2+ sessions a week. Size: about 10+ sets per muscle per week. Power: 30–70% of 1RM moved fast (https://pubmed.ncbi.nlm.nih.gov/41843416/) Oja et al., sport type and mortality in 80,306 British adults, British Journal of Sports Medicine (2017). Observational; racquet sports linked to 47% lower all-cause mortality (https://pubmed.ncbi.nlm.nih.gov/27895075/) Lee et al., leisure-time physical activity intensity and mortality, Circulation (2022). Covered in the cardio episode (https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.121.058162) Concepts & tools CDC adult guidelines: 150 min moderate or 75 min vigorous aerobic activity a week, plus strength training 2+ days (https://www.cdc.gov/physical-activity-basics/guidelines/adults.html) Rating of perceived exertion and the Borg 6–20 scale (https://en.wikipedia.org/wiki/Rating_of_perceived_exertion) · Sports periodization (https://en.wikipedia.org/wiki/Sports_periodization) SAID principle (https://en.wikipedia.org/wiki/SAID_principle) · Allostatic load (https://en.wikipedia.org/wiki/Allostatic_load) VO2 max (https://en.wikipedia.org/wiki/VO2_max) · HYROX (https://hyrox.com) FOLLOW US The Show Website: medicineredefined.com (https://medicineredefined.com) Instagram / X: @medredefined (https://instagram.com/medredefined) Dr. Altamash Raja Instagram: @draltraja (https://instagram.com/draltraja) LinkedIn: Altamash Raja (https://www.linkedin.com/in/altamash-raja-do-rmsk-cscs) Refining Health & Performance (https://refininghealthrx.com) Dr. Darsh Shah Instagram: @doctor.darsh (https://www.instagram.com/doctor.darsh/) LinkedIn: doctordarsh (https://www.linkedin.com/in/doctordarsh/) Ready to stop guessing and start performing? Dr. Raja is now seeing patients through his telemedicine practice — limited founding member spots available at refininghealthrx.com (https://refininghealthrx.com).

EPISODE DESCRIPTION Should doctors be worried about AI, or should administrators? Family physician Dr. Sam Robinson left a 2,200-patient insurance panel with a 13-week waitlist to build Altaura Health, a direct primary care longevity practice outside Sacramento. He joins Drs. Raja and Shah on the four pillars he actually measures, the routine panel that caught a diagnosis nobody was looking for, and why the physicians automating their administration, not their judgment, will define the next era of private practice. TOPICS COVERED Why family medicine is the natural home for preventive care, and the four conditions longevity medicine is really aiming at Four pillars measured, not marketed: visceral fat by DEXA, VO2 max, muscle mass and strength, and extensive biomarker panels Leaving insurance: 2,200 patients down to 300, 13-week waits to same-week access, pricing, super bills, and working around HMO coverage Will AI replace doctors: the pilot analogy, Mark Cuban's argument, and why the administrative layer is the more obvious target Testing philosophy: the ferritin that caught hemochromatosis, full-body MRI counseling, consumer lab panels, and reassurance as a deliverable Advice for physicians going DPC: brand the value you deliver, automate the back office, and what a one-assistant practice can actually do RESOURCES & LINKS MENTIONED Referenced on the show Mark Cuban on why AI won't replace physicians, and his follow-up that it will replace administrative tasks (https://www.barchart.com/story/news/4119132/mark-cuban-says-ai-cant-replace-doctors-because-it-cant-see-a-patient-collapse-and-start-cpr-you-just-puked-lets-find-out-why) Dr. Derya Unutmaz on FoundMyFitness, "Why AI Could Add Decades to Your Lifespan" (https://www.foundmyfitness.com/episodes/derya-unutmaz) Function Health (https://www.functionhealth.com) Concepts & tools Direct primary care (https://en.wikipedia.org/wiki/Direct_primary_care) VO2 max (https://en.wikipedia.org/wiki/VO2_max) · DEXA (https://en.wikipedia.org/wiki/Dual-energy_X-ray_absorptiometry) · Visceral fat (https://en.wikipedia.org/wiki/Abdominal_obesity) HOMA-IR (https://en.wikipedia.org/wiki/Homeostatic_model_assessment) · Hereditary hemochromatosis (https://en.wikipedia.org/wiki/Hereditary_haemochromatosis) · Gilbert's syndrome (https://en.wikipedia.org/wiki/Gilbert%27s_syndrome) FOLLOW US Dr. Sam Robinson Altaura Health (https://www.altaurahealth.com) The Show Website: medicineredefined.com (https://medicineredefined.com) Instagram / X: @medredefined (https://instagram.com/medredefined) Dr. Altamash Raja Instagram: @draltraja (https://instagram.com/draltraja) LinkedIn: Altamash Raja (https://www.linkedin.com/in/altamash-raja-do-rmsk-cscs) Refining Health & Performance (https://refininghealthrx.com) Dr. Darsh Shah Instagram: @doctor.darsh (https://www.instagram.com/doctor.darsh/) LinkedIn: doctordarsh (https://www.linkedin.com/in/doctordarsh/) Ready to stop guessing and start performing? Dr. Raja is now seeing patients through his telemedicine practice — limited founding member spots available at refininghealthrx.com (https://refininghealthrx.com).

EPISODE DESCRIPTION Acid reflux isn't a problem of too much acid. Gastroenterologist Dr. Badal Shah joins Drs. Raja and Shah to break down what's actually failing (the lower esophageal sphincter), how patients end up on PPIs for decades, and how to wean off without rebound. They cover the long-term risks of acid suppression, fiber as the most underrated GI intervention, SIBO vs. leaky gut, what probiotics can and can't do, and why fecal transplants cure recurrent C. diff more than 95% of the time. TOPICS COVERED From scopes to lifestyle: why a procedure-trained GI left the reactive model for post-acute care and lifestyle-first practice Reflux pathophysiology: transient LES relaxations, not excess acid; stress, sleep, obesity, and immobility as drivers PPIs: who truly needs them, rebound reflux, weaning protocols, and long-term risks (C. diff, pneumonia, fractures) Fiber and FODMAPs: the 30–35 g/day target, soluble vs. insoluble, and elimination diets done right Microbiome without the hype: dysbiosis, SIBO vs. leaky gut, breath tests, and what stool tests actually check Probiotics to fecal transplants: strains and timelines, prebiotics and postbiotics, and the gut-brain axis RESOURCES & LINKS MENTIONED Studies Famotidine activates the vagus nerve inflammatory reflex to attenuate cytokine storm, Molecular Medicine (2022) (https://molmed.biomedcentral.com/articles/10.1186/s10020-022-00483-8). Note: read on air as "formoterol inactivates"; the drug is famotidine (Pepcid), and it activates the reflex. Turnbaugh et al., An obesity-associated gut microbiome with increased capacity for energy harvest, Nature (2006) (https://www.nature.com/articles/nature05414) Concepts & tools GERD (https://en.wikipedia.org/wiki/Gastroesophageal_reflux_disease) · Proton-pump inhibitors (https://en.wikipedia.org/wiki/Proton-pump_inhibitor) · Barrett's esophagus (https://en.wikipedia.org/wiki/Barrett%27s_esophagus) Low-FODMAP diet (https://en.wikipedia.org/wiki/Low-FODMAP_diet) · Dietary fiber (https://en.wikipedia.org/wiki/Dietary_fiber) SIBO (https://en.wikipedia.org/wiki/Small_intestinal_bacterial_overgrowth) · Hydrogen breath test (https://en.wikipedia.org/wiki/Hydrogen_breath_test) · Dysbiosis (https://en.wikipedia.org/wiki/Dysbiosis) · Intestinal permeability (https://en.wikipedia.org/wiki/Intestinal_permeability) Probiotics (https://en.wikipedia.org/wiki/Probiotic) · Prebiotics (https://en.wikipedia.org/wiki/Prebiotic_(nutrition)) · Postbiotics (https://en.wikipedia.org/wiki/Postbiotic) · Akkermansia muciniphila (https://en.wikipedia.org/wiki/Akkermansia_muciniphila) Fecal microbiota transplantation (https://en.wikipedia.org/wiki/Fecal_microbiota_transplant) · Vowst (https://www.vowst.com) · C. difficile infection (https://en.wikipedia.org/wiki/Clostridioides_difficile_infection) Gut-brain axis (https://en.wikipedia.org/wiki/Gut%E2%80%93brain_axis) · Vagus nerve (https://en.wikipedia.org/wiki/Vagus_nerve) The Tim Ferriss Show #824 with Dr. Kevin Tracey on vagus nerve stimulation (https://tim.blog/2025/08/27/kevin-tracey-vagus-nerve/) FOLLOW US The Show Website: medicineredefined.com (https://medicineredefined.com) Instagram / X: @medredefined (https://instagram.com/medredefined) Dr. Altamash Raja Instagram: @draltraja (https://instagram.com/draltraja) LinkedIn: Altamash Raja (https://www.linkedin.com/in/altamash-raja-do-rmsk-cscs) Refining Health & Performance (https://refininghealthrx.com) Dr. Darsh Shah Instagram: @doctor.darsh (https://www.instagram.com/doctor.darsh/) LinkedIn: doctordarsh (https://www.linkedin.com/in/doctordarsh/) Ready to stop guessing and start performing? Dr. Raja is now seeing patients through his telemedicine practice — limited founding member spots available at refininghealthrx.com (https://refininghealthrx.com).