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This episode is part of our expert interview series inside the School of Doza.

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EPISODE SUMMARY

In this groundbreaking lecture, Dr. Kayla Osterhoff breaks down why the female body is still one of the least understood topics in modern medicine. From the massive gender gaps in clinical research to the misunderstood role of hormonal rhythms, this talk challenges nearly every conventional health assumption about women’s physiology. You’ll learn how the female biological rhythm affects everything from metabolism to cognition—and why the missing link in women’s health isn’t just about hormones, but about data, design, and decades of neglect.

 

 

5 KEY TAKEAWAYS

 

• The Research Gap Is Real—and Deep

Women were banned from clinical research until 1993, and even today remain underrepresented, especially in areas like drug trials, cardiovascular studies, and brain health.

 

• Bikini Medicine Isn’t Enough

Most “women’s health” research still focuses narrowly on reproductive organs, ignoring how sex hormones impact the brain, immune system, metabolism, and more.

 

• The Female Biological Rhythm Is NOT 24 Hours

Unlike men, women operate on a ~28-day hormonal rhythm—shifting cognition, metabolism, stress response, and energy throughout four distinct phases.

 

• Health Advice That Ignores Hormones Can Be Harmful

Popular trends like intermittent fasting or high-intensity training may work well for men but can backfire for women if not timed to their hormonal cycle.

 

• Personalized, Phase-Based Health Is the Future

Tracking one’s own biological rhythm and learning phase-specific strategies for supplements, sleep, nutrition, and stress is the most empowering step women can take now.

 

 

 

Want to Learn How to Support Women’s Health Holistically?

If this interview resonates, don’t miss our upcoming Holistic Practitioner Course inside the School of Doza. You’ll learn how to support hormones, gut health, weight loss, and energy using nutrition, labs, and supplements—taught by a Nurse Practitioner with over 10 years of clinical experience.

Spots are limited. Get early access and special pricing:

👉https://community.schoolofdoza.com/holistic-practitioner-course

TIMESTAMPS

00:00 Introduction to Dr. Osterhoff and the concept of the female biological rhythm

02:00 How women’s bodies have been systematically excluded from research

05:00 The ripple effect of male-dominant data in modern healthcare

08:30 Defining “bikini medicine” and what’s missing from the conversation

12:00 Key health disparities disproportionately affecting women

15:00 How hormones like estrogen and progesterone drive physiological complexity

19:00 The difference between the male 24-hour rhythm and the female 28-day rhythm

24:00 A breakdown of the four hormonal phases and what changes in each

31:00 Cognitive shifts across the menstrual cycle

34:00 Why research still avoids studying cycling women

39:00 How to critically assess research that claims universal outcomes

43:00 Strategies for women to become their own health advocates

47:00 Why lifestyle, supplements, and exercise must change by phase

50:00 Q&A: HRT, menopause rhythms, HRV, supplements, and more

01:07:00 Final thoughts on changing the system from the inside out

 

 

 

RESOURCES MENTIONED

 

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  Dr. Kayla Osterhoff – HerBioRhythm.com

  
  


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  Women’s Neuropsychophysiology Certification – Learn More Here

  
  


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  Instagram: @dr.kaylaosterhoff

  
  


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  Landmark study on sex differences in drug adverse events: NIH Source

  
  


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  Office of Women’s Health at NIH: womenshealth.gov

  
  

 

 

 

 

CONNECT WITH NURSE DOZA

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  Website: schoolofdoza.com

  
  


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  Instagram: @nursedoza

  
  


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  YouTube: School of Doza Channel