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Cynthia Thurlow is a nurse practitioner, bestselling author, and trusted expert in women’s metabolic health who has spent more than two decades helping women understand the root causes behind fatigue, weight gain, cravings, and hormonal disruption. Known for translating complex science into clear, practical guidance, she brings a powerful focus to perimenopause, menopause, fasting, stress, and gut health. In this conversation, Cynthia shares insights on the microbiome, insulin resistance, aging, and why extremes can sometimes backfire. She is also the author of the new book The Menopause Gut, which explores how gut health shapes women’s health in midlife and beyond.
In this episode, Dr. Brian and Cynthia talk about…
- (00:00) Intro
- (04:30) Why Cynthia became so interested in the gut microbiome as a women’s health expert
- (10:07) Gut health, blood sugar, and insulin resistance
- (12:04) Fiber, carnivore, and the microbiome
- (26:39) Adverse Childhood Events, stress, and women’s health
- (32:47) Pros and cons of the Western medical system
- (38:56) Why going to extremes with carb restriction and exercise can backfire for some people
- (43:24) Why stress is such a killer
- (45:48) The benefits of the DPC healthcare model
- (53:23) Gut health and aging
- (01:01:14) Outro
The Life’s Best Medicine Podcast is sponsored by HLTH Code.

LINKS:
Cynthia Thurlow:
- Website: https://www.cynthiathurlow.com/
- X: https://x.com/_CynthiaThurlow
- IG: https://www.instagram.com/cynthia_thurlow_/
- Books: https://www.penguinrandomhouse.com/authors/2345217/cynthia-thurlow-np/
Dr. Brian Lenzkes:
- Website: https://arizonametabolichealth.com/
- Twitter: https://twitter.com/BrianLenzkes
HLTH Code:
- HLTH Code Promo Code: METHEALTH
- HLTH Code Website