How to Optimize Your Hormones for Health & Vitality
Summary
Dr. Kyle Gillett, a dual board-certified physician in family medicine and obesity medicine, outlines a comprehensive framework for hormone optimization across the lifespan for both men and women. The discussion covers the “Big Six” lifestyle pillars, key hormones including testosterone, DHT, prolactin, and growth hormone, as well as practical guidance on peptides, PCOS, and the effects of substances like marijuana and alcohol on hormone health.
Key Takeaways
- The Big Six pillars for hormone health are: diet, exercise, stress optimization, sleep, sunlight/outdoor exposure, and spirit — with diet and exercise being the most powerful.
- Caloric restriction improves testosterone in obese or metabolically unhealthy individuals, but decreases testosterone in young, lean, healthy men.
- Intermittent fasting at caloric maintenance is not harmful to hormones and can enhance overnight growth hormone release.
- DHT is a potent androgen that supports motivation and drive; certain plant polyphenols like curcumin and black pepper extract inhibit its production.
- Smoked marijuana increases aromatase activity, raising estrogen and suppressing testosterone; alcohol and GABA agonists also decrease testosterone.
- TRT increases risk of sleep apnea in a dose-dependent manner, even in men with normal baseline testosterone.
- BPC-157 is most beneficial for injury recovery, particularly in tissues with poor blood flow like cartilage and ligaments — but should be avoided by those with cancer or high cancer risk.
- PCOS is significantly underdiagnosed, affecting possibly 10–20% of women, and is characterized by androgen excess and insulin resistance.
- Prolactin and dopamine are tightly linked; managing dopamine balance (avoiding spikes and crashes) helps regulate prolactin and downstream testosterone levels.
- Caffeine has a negligible direct effect on hormones — its main hormonal impact is indirect, through disrupting sleep.
Detailed Notes
The Big Six Pillars of Hormone Health
Dr. Gillett emphasizes a law of diminishing returns principle: consistent, moderate lifestyle interventions over time outperform intense short-term efforts.
- Diet — Highly individualized; influenced by genetics, metabolic type, and health goals. Blood testing every 3–6 months recommended, including both fasted and non-fasted states.
- Exercise — Resistance training is especially beneficial for hormone health. Zone 2 cardio at 150–180 minutes per week is a useful baseline target; more zone 2 reduces the necessity for strict caloric restriction.
- Stress Optimization — Impacts cortisol, mental health, and collective family health. Hormone optimization is more effective when pursued as a household unit.
- Sleep — Critical for mitochondrial health and hormonal recovery, especially growth hormone release.
- Sunlight/Outdoors — Encompasses sunlight exposure, movement, cold exposure, and heat exposure.
- Spirit — Spiritual health is viewed as a third pillar alongside body and mind. Unaddressed spiritual health can physiologically affect the body, regardless of one’s belief system.
Diet and Caloric Restriction
- Diet should be individualized based on genetics and metabolic response.
- Caloric restriction improves testosterone in those with metabolic syndrome or obesity.
- In young, healthy, lean men, caloric restriction decreases testosterone (supported by a Mayo Clinic Proceedings systematic review).
- Intermittent fasting at caloric maintenance is not detrimental to hormone health and may boost overnight growth hormone and subsequently IGF-1 levels.
Testosterone, DHT, and Androgens
- Testosterone should be measured in both men and women for health optimization.
- Women have more total testosterone than estradiol (measured in different units), and significantly more DHEA than either.
- SHBG (sex hormone binding globulin) binds DHT most strongly, then testosterone, then DHEA, then estradiol.
- DHT (dihydrotestosterone) is a highly potent androgen involved in motivation and drive. It is synthesized from testosterone via the enzyme 5-alpha reductase.
- Plant polyphenols such as bioavailable curcumin, turmeric, and black pepper extract inhibit DHT conversion. Individuals with low DHT or insensitive androgen receptors should avoid these.
- For hair loss without systemic DHT suppression: dutasteride mesotherapy (localized scalp injections) can reduce DHT conversion only in the scalp without systemic effects.
Growth Hormone and IGF-1
- Growth hormone is a peptide hormone (not a steroid); it spikes after meals but more significantly overnight.
- Intermittent fasting enhances overnight growth hormone output; avoiding food 2–3 hours before bed still yields meaningful output.
- Endocrine IGF-1 (liver-synthesized) vs. paracrine/autocrine IGF-1 (released locally after exercise) have different effects — local IGF-1 is likely responsible for exercise-driven body composition improvements.
- Growth hormone peptides (GHRPs) carry risks including tumor growth and increased cancer risk, similar to the profile of type 1 diabetics with high GH and low IGF-1.
Prolactin and Dopamine
- Prolactin and dopamine operate as counterbalances; the “dopamine wave pool” model suggests avoiding extreme dopamine spikes to prevent large prolactin rebounds.
- Estrogen upregulates the PRL gene, increasing prolactin synthesis.
- High prolactin suppresses LH and FSH, reducing testosterone.
- Mu-opioid receptor agonists in the gut — such as casein (milk protein) and gluten — can elevate prolactin.
- Dopamine agonists can reduce prolactin-producing cell activity.
PCOS (Polycystic Ovarian Syndrome)
- Prevalence estimated at 10–20%; largely underdiagnosed.
- Most women discover it in their 30s, often due to infertility or subfertility.
- Diagnosed via Rotterdam Criteria: androgen excess, insulin resistance, and/or polycystic ovaries (ultrasound not required for diagnosis).
- Symptoms include: hormonal/androgenic acne, chin hair growth (hirsutism), voice deepening, female-pattern hair loss, irregular periods (>35-day cycles or <9/year), high fasting insulin (>6 is notable).
- Treatment tools: body composition optimization, Metformin (insulin sensitizer), myo-inositol (insulin sensitizer), D-chiro-inositol (weak anti-androgen). Type of inositol matters depending on sex and goals.
TRT, Testosterone Supplementation, and Risks
- Testosterone does not cause prostate cancer but will accelerate the growth of existing prostate cancer; risk increases with age.
- TRT raises sleep apnea risk in a dose-dependent manner, even in eugonadal men.
- Men starting TRT after prolonged hypogonadism may enter a hyper-sympathetic state due to overactive androgen receptors, disrupting sleep initially.
Substances and Hormones
- Smoked marijuana: Increases aromatase → raises estrogen → suppresses LH/FSH → reduces testosterone. Similar mechanism to opiates.
- THC/CBD alone: Not shown to directly reduce testosterone.
- Alcohol and GABA agonists (barbiturates, benzodiazepines): Decrease testosterone at high doses.
- Caffeine: Negligible direct hormonal effect; impacts hormones only indirectly if it disrupts sleep.
Peptides: BPC-157 and Melanotan
BPC-157 (Body Protective Compound 157)
- Bio-identical to a gastric protective compound naturally produced in the stomach.
- Increases VEGF (vascular endothelial growth factor), promoting blood vessel growth.
- Most beneficial for injury recovery, especially in low-vascularized tissues (cartilage, ligaments