Essentials: Tools for Hormone Optimization in Males | Dr. Kyle Gillett

Welcome to Huberman Lab Essentials, where we pull forward the most practical science for mental and physical performance. I’m Andrew Huberman, and today I ask Dr. Kyle Gillette what men should do—and avoid—to keep hormones strong across the lifespan.

Think of puberty and beyond like an ongoing systems check. Get a thorough baseline, then track key markers over time because development and adaptation never really stop.

On labs, what matters beyond testosterone, and how often should people test?

Pair total testosterone with SHBG or measure free testosterone, since SHBG controls how much hormone is actually available. DHT drives many male traits, so you want enough free DHT without pushing total DHT too high.

About every six months with your physician is a solid follow-up cadence. Walk us through day-to-day pillars that support hormones.

Start with diet, exercise, and sleep, especially during puberty. Dairy can raise IGF-1, which supports growth of bone, skin, hair, and sexual development, and vitamin D helps testosterone and bone health.

How do you see diet composition in teens and 20s, and which nutrients deserve attention?

Extreme diets like strict carnivore or strict vegan are a bad idea for teens and early 20s because they often reduce free androgens; later 20s may tolerate more experimentation. Prioritize fiber to set your gut microbiome’s trajectory and essential fatty acids for brain development across the lifespan.

You’ve said weight loss helps if someone has excess body fat, but cutting calories in lean people can backfire. Can you clarify?

That’s right. In a calorie deficit, you have fewer raw materials for hormones, more catabolism, and SHBG tends to rise, which lowers free androgens and estrogens.

Beyond food and sleep, what else creates a pro-hormone environment?

Manage stress so it does not unravel the other pillars. Also invest in purpose and direction; aligning effort with what you truly value stabilizes behavior that supports hormone health.

What’s a sustainable exercise plan that helps hormones?

Do vigorous training three to four times per week with additional lighter sessions, and avoid regular hard efforts longer than an hour because they tend to be counterproductive hormonally.

Many young men ask about TRT even with normal labs. Is there ever a good case?

Very rarely in the 20s, outside of unusual medical conditions. The risk-benefit almost never favors it that young.

For those with normal ranges who want better libido, energy, and recovery without suppressing their own production, which supplements help?

Creatine supports energy systems, reduces oxidative stress, and can nudge total testosterone and the T-to-DHT conversion. It does not meaningfully accelerate hair loss; it tends to normalize your own balance rather than push it past natural limits.

If creatine does little, try a higher dose or add betaine at one to three grams; check homocysteine to see if you need it. L-carnitine is useful but poorly absorbed orally, so doses of one to five grams are typical; watch TMAO at higher intakes and consider allicin from garlic, microbiome support, or, if tolerated, berberine to blunt TMAO formation.

Carnitine ferries fuel into mitochondria and can increase androgen receptor density, as can tadalafil. There’s no need to cycle creatine, betaine, or carnitine.

Any other low-lift levers?

Replete vitamin D if you are low to support testosterone. Boron at five to twelve milligrams can acutely lower SHBG; soils vary by region, which may explain some geographic differences in hormone ranges.

How do you view Tongkat Ali?

It upregulates several steps in steroid hormone synthesis from cholesterol, so it is especially handy when insulin and IGF-1 are lower, like on low-carb or in a deficit. Typical dosing is three hundred to twelve hundred milligrams daily depending on eurycomanone standardization, with small rises in DHEA and reductions in SHBG mainly when SHBG starts high.

And Fadogia agrestis?

It increases LH release from the pituitary and can bump testosterone. Human-equivalent dosing around three hundred milligrams daily appears safe; an alternate is six hundred milligrams three times weekly, with labs monitored because rodent toxicity data raise flags at much higher exposures.

If someone with normal total T has symptoms and you consider TRT, how do you dose and what do you watch?

A common starting range is one hundred to one hundred twenty milligrams per week of cypionate or enanthate, split into two or three injections and adjusted for SHBG and free T. Expect steadier levels than natural morning-evening swings, and monitor for acne, hair loss, mood shifts, cardiovascular and microvascular risk, ferritin, lipids, and fertility—this calls for a physician who can oversee multiple systems.

Some use clomiphene to avoid exogenous testosterone. Is that wise?

Clomiphene blocks estrogen feedback at the hypothalamus and pituitary and raises testosterone, but SERMs act in many tissues and side effects are common, including visual changes. It is best used as a short-term bridge in select cases, not a long-term optimization tool.

Where does alcohol fit?

It increases aromatase in a dose-dependent way, adds significant calories, and its GABAergic effects can suppress LH and FSH. Keep intake low; three to four standard drinks every two weeks is a reasonable ceiling.

You sometimes prescribe low-dose tadalafil for prostate health. What should listeners know?

Two and a half to five milligrams daily can improve urinary symptoms, often halving nighttime trips, which benefits sleep and hormones; it also slightly lowers blood pressure and may cause reversible red-green color changes at higher doses. It likely increases androgen receptor density as a bonus.

For hair, can people protect libido while treating the scalp?

Topical ketoconazole and caffeine have mild antiandrogen effects. Avoid topical spironolactone due to systemic absorption; topical finasteride lowers systemic DHT roughly thirty percent, while topical dutasteride tends to spare systemic DHT at low doses and works well in practice.

Thanks for bringing such clear, actionable detail. It is a pleasure to have you here and to share this knowledge with our audience.