Podcast Summary: The Ultimate Human with Gary Brecka

Episode 207: Cynthia Thurlow — On Women’s Health, Intermittent Fasting, Protein Intake & Hormone Therapy

Date: October 7, 2025
Host: Gary Brecka
Guest: Cynthia Thurlow, Nurse Practitioner, Intermittent Fasting & Women’s Health Expert

Episode Overview

This episode is a powerhouse discussion on women's health, focused on the interplay between intermittent fasting, protein intake, muscle maintenance, hormone therapy, and particularly the unique biological and psychological considerations for women across menstruating, perimenopausal, and menopausal phases. Cynthia Thurlow shares her clinical experience, personal journey, and science-driven strategies for optimizing female health and longevity—dispelling one-size-fits-all myths, advocating for bio-individuality, and providing actionable advice.

Key Discussion Points & Insights

1. The Critical Importance of Menstrual Health

• Cynthia urges that women’s menstrual cycles are foundational health indicators, as vital as blood pressure or pulse.
  • “If a woman loses her menstrual cycle and she's not pregnant, guess what? That is a sign that her body is under too much stress.” (Cynthia, [00:00])
• Menstrual irregularity isn’t normal; fasting, overtraining, or under-eating can disrupt cycles.

2. Intermittent Fasting: Tailoring to Women’s Needs

• Intermittent fasting’s “one size fits all” philosophy fails women, particularly at different life stages.
• Women’s response to fasting is modulated heavily by their hormonal environment.
  • “A 24 year old who is lean and athletic has no business doing a lot of intermittent fasting.” (Cynthia, [09:46])
  • Time-restricted eating must be considered in context—athletes, lean women should be cautious, while those with metabolic dysfunction may benefit (with support).
• Bio-individuality rules: Chronic stress, inadequate protein, and overuse of stressors (fasting, cold plunges, intense HIIT) can backfire.

3. Quality Protein & Muscle Maintenance for Longevity

• Muscle is termed “metabolic currency.” Loss of muscle—whether due to illness, under-eating, or aging—increases frailty and metabolic decline.
• Protein intake must be higher with age. Minimum of 100g/day suggested as a starting point for women.
  • “If you cannot get at least 100 grams of protein in a day, then your feeding window is way too compressed.” (Cynthia, [20:25])
• Many women do not realize they’re drastically under-consuming protein (often only ~50g/day).
• Amino acid supplementation: Both endorse using essential amino acids, especially for those struggling to consume enough protein.

4. Hormetic Stressors: Fasting, Exercise, Cold, and Heat

• While mild stressors can benefit health, adding too many or overdoing them (especially with concurrent life stress) can damage women’s hormonal and metabolic health.
  • “In a body that is conditioned to respond to stressors, we don’t need as much stress to create hormesis…” (Cynthia, [11:23])

5. Creatine & Supplements for Women

• Creatine monohydrate is recommended for both cognitive function and muscle, especially as women have lower endogenous stores.
  • “I’m doing 20 grams of creatine monohydrate daily [while traveling]… I sleep better.” (Cynthia, [32:01])
• Quality matters (prefer KoreaPure or German production for purity).

6. The Gut Microbiome: The Foundation of Female Health

• Emphasized as central to hormonal regulation, immune function, mood, digestion, and even bone health.
  • “Everything affects the gut, and everything about the gut impacts every other choice that we make.” (Cynthia, [36:54])
• Menopause and perimenopause uniquely remodel the microbiome—microbiota diversity decreases, affecting resilience against infections and altering nutrient metabolism.

7. Real-Life Clinical Experiences & Resilience

• Cynthia shares her own harrowing hospitalization (ruptured appendix, pan-colitis, abscesses, loss of 15 lbs of muscle) and how protein, slow rehabilitation, and essential amino acids helped her recover [23:25–27:39].
• Also recounts how her son maintained muscle through illness using amino acids [27:39].

8. Signs & Support for Gut Dysfunction

• Symptoms like intolerance to fiber, chronic constipation, or bloat point to the need for gut testing (stool, food sensitivities), individualized elimination diets, supportive enzymes, proper hydration, and mindful eating practices over “quick fixes”.
  • “Most women by the time they're in their 40s probably are not tolerating gluten, potentially grains and possibly dairy, and certainly alcohol.” (Cynthia, [47:38])

9. Constipation: Causes and Simple Solutions

• Chronic constipation isn’t normal—address hydration, magnesium glycinate, ayurvedic supplements (triphala), and daily fiber via chia and flax seeds rather than relying on stimulants.
• “A tablespoon of fresh ground flax and a tablespoon of chia seeds together. Brilliant.” (Cynthia, [54:12])

10. Hormone Testing & Hormone Replacement Therapy (HRT)

• Recommends a mix of blood, saliva, and the Dutch test to assess hormone balance and metabolism, especially for perimenopausal/menopausal women.
  • “I like the Dutch [test] for looking at distribution of cortisol over a 24 hour period of time.” (Cynthia, [59:10])
• Pro-HRT: Dismantles outdated fears (“Women’s Health Initiative” study stigma) and explains the benefits of bioidentical hormones for heart, bone, cognitive health, and quality of life.
  • “I am very pro HRT if that is the right choice. It is a shared decision making. What I find is people are still scared.” (Cynthia, [62:55])
  • Emphasizes oral progesterone, estradiol, and, when indicated, testosterone. She avoids pellets due to dosing unpredictability.
  • “Estrogen acts like a PCSK9 inhibitor… for someone has a high LP, I would argue that estrogen replacement therapy is critically important.” (Cynthia, [68:52])

11. Blood Lipids, Cardiovascular Health, and Female Atherosclerosis Risk

• Warns that cardiac risk in women skyrockets post-menopause due to hormonal changes and under-recognized inflammation.
  • “The number one killer of women is heart disease, full stop. One in three women will die of atherosclerotic cardiovascular disease.” (Cynthia, [66:04])
• Testing for apolipoprotein B (APOB) and Lp(a) is urged, as is reevaluating “safe” triglyceride levels—should be <70mg/dL.
• Nutrition note: High triglycerides more closely tied to sugar overconsumption than dietary fat. Keto resets can rapidly lower dangerously high levels ([71:03]).

12. Book Announcement & Final Advice

• Cynthia’s forthcoming book: The Menopause Gut—a deep dive into gut health as the cornerstone of female midlife well-being.
• “Being an ultimate human is being like the ultimate example—not just to my family, but also my community… I do everything I can to live as healthfully as I possibly can.” (Cynthia, [72:47])

Notable Quotes & Moments

• On Messaging Around Female Health:
  • “We've been part of a culture that has really sent a very damaging message to women. That thin is what we want to attain… often at the expense of losing muscle mass.” (Cynthia, [15:32])
• On Stress & Self-Awareness:
  • “Don't add in fasting if you're going through a divorce, you lost your job… That is not the time to add this additional stressor.” (Cynthia, [19:00])
• On Constipation & Hormones:
  • “Constipation is not normal, full stop. If… you poop two or three times a week, I'm like, that is a problem. Huge problem, huge issue.” (Cynthia, [50:33])

Timestamps for Key Segments

• [00:00–01:15] — Menstrual cycle as a health vital
• [03:01–06:31] — Cynthia’s journey from ER clinician to women’s health advocate
• [09:45–12:51] — Intermittent fasting cautions and cycles
• [14:43–16:08] — Protein, body composition, and metabolic health
• [16:37–18:04] — Peptides and candidate assessment for fasting
• [20:25–23:25] — Protein goals, muscle maintenance, and essential amino acids
• [23:25–27:39] — Cynthia’s hospitalization and the importance of rebuilding with protein
• [30:41–33:26] — Creatine supplementation; practical advice
• [36:48–40:44] — Gut microbiome, hormones, and life stage changes
• [45:21–49:49] — Gut repair strategies, elimination diets, digestive support
• [54:12–55:24] — Constipation: easy interventions
• [56:35–69:23] — Hormone testing, therapy, dispelling HRT fears, special focus on cardiovascular disease
• [71:59–72:47] — Cynthia’s book, finding her work, and her “ultimate human” answer

Where to Find Cynthia Thurlow

• Website: cynthiathurlow.com
• Podcast: Everyday Wellness

Episode take-home: Women’s health, especially in midlife, demands careful, individualized attention—not cookie-cutter “biohacking” or diet fads. Protein and muscle are foundational; hormones and gut health are the cornerstones of energy, cognition, and longevity; one’s cycle, mood, and digestive function are all deep signals, not annoyances. Science, self-experimentation, and support—not shame or self-neglect—form the future of being an “ultimate human.”