Jul 2, 2026 · 40 min
Dr. Kyle Gillett outlines clinical protocols for male hormone optimization
Essentials: Tools for Hormone Optimization in Males | Dr. Kyle Gillett
Understanding the science of hormone health helps men avoid premature medical interventions like TRT by utilizing proven lifestyle protocols and supplements first.
- 1Regular diagnostic blood work every six months is essential to monitor key markers like free testosterone and sex hormone-binding globulin.
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Dr. Kyle Gillett dispels the widespread myth that creatine supplementation causes hair loss, explaining the actual physiological mechanisms.
The brief
Dr. Kyle Gillett joins Andrew Huberman to break down the clinical realities of male hormone optimization, moving past the internet hype to focus on diagnostic blood work and foundational lifestyle habits that support long-term endocrine health.
While exogenous testosterone replacement therapy is surging in popularity among young men, Gillett warns that it is rarely appropriate or beneficial for those with normal baseline levels, urging a focus on sleep, diet, and exercise first.
On the supplement front, Gillett dispels the common myth that creatine causes hair loss. He explains how targeted compounds like L-carnitine and Tongkat Ali can naturally support hormone pathways by increasing receptor density and upregulating key enzymes.
For physical longevity, Gillett highlights the prostate health benefits of low-dose tadalafil and details scalp-level interventions for hair loss, such as topical caffeine and ketoconazole, to block DHT without systemic side effects.
What was said on this episode
46 statements · 25 positive · 15 negative · 6 neutral
People should monitor hormone-related development across the lifespan.
“you wanna monitor that progress across a person's lifespan”
Listen at 1:04
Hormone evaluation should measure testosterone with SHBG or free testosterone.
“you want to get either testosterone and a SHBG or a free testosterone”
Listen at 1:20
SHBG binds circulating androgens and estrogens.
“It is the protein that binds up all androgens and estrogens in the body.”
Listen at 1:29
High SHBG can increase DHT by reducing its metabolism.
“if your SHBG is very high, then your DHT can run higher because it's not metabolized”
Listen at 1:50
Follow-up blood work is usually appropriate after about six months.
“Usually a good follow up is about six months.”
Listen at 2:14
Dairy consumption can increase IGF-1 and free IGF-1.
“dairy can help increase IGF1 and free IGF1”
Listen at 2:53
IGF-1 supports growth, genital development, secondary sexual characteristics, and long-bone growth.
“it helps you grow, it helps with genital development, secondary sexual characteristics and long bone growth”
Listen at 3:03
Vitamin D supports testosterone production.
“Vitamin D helps with testosterone production.”
Listen at 3:22
Strict carnivore or vegan diets in young people may significantly reduce free androgens.
“it is likely to significantly decrease your free androgens so you will have less testosterone acting on receptors through the body”
Listen at 4:30
Fiber strongly influences the lifelong baseline of the gut microbiome.
“Fiber is going to be paramount in kind of like setting your set point of your gut microbiome the rest of your life.”
Listen at 4:42
Prebiotic fiber and essential fatty acids support brain development.
“it helps with brain development”
Listen at 5:23
Caloric deficit reduces hormonal building blocks.
“they'll have less building blocks for hormones”
Listen at 6:20
Caloric deficit lowers free androgens and free estrogens.
“So they're free andro and free estrogens will go down.”
Listen at 6:40
Excess stress can disrupt diet, exercise, and other hormone-supporting behaviors.
“if someone is overstressed, then it can put all the other lifestyle pillars and then they stop dieting. Well, they stop exercising and everything else can go askew.”
Listen at 7:06
Three to four weekly vigorous exercise sessions are sustainable long term.
“Around three to four times a week is very sustainable over a long period of time.”
Listen at 9:47
Regular vigorous training sessions longer than one hour are not hormonally helpful.
“do not, it is not hormonally helpful to train, especially regularly, train vigorously for longer than an hour.”
Listen at 10:20
Testosterone therapy is almost never justified for people in their twenties.
“Not very often if you're in your 20s, and certainly probably almost hardly never.”
Listen at 11:52
Creatine slightly raises total testosterone and testosterone-to-DHT conversion.
“it does slightly increase total testosterone and it also increases the conversion of testosterone to dihydrotestosterone”
Listen at 12:59
Hair-loss concerns alone should not deter creatine use.
“Hair loss is not a reason to avoid taking creatine.”
Listen at 14:09
Creatine will not accelerate hair loss beyond natural male-related risk.
“it's not going to speed up hair loss more than just naturally being a male does”
Listen at 14:34
Betaine supplementation is warranted for creatine users only with persistently elevated homocysteine.
“Only if their homocysteine is persistently elevated.”
Listen at 15:37
High carnitine or choline intake may increase TMAO, a potential carcinogen.
“you should be concerned with tmao, which is a potential carcinogen that both carnitine and choline can convert into.”
Listen at 17:11
Garlic-derived allicin may reduce conversion to TMAO.
“this can help decrease the conversion to tmao.”
Listen at 17:42
L-carnitine increases androgen-receptor density in cells.
“it increases the density of the androgen receptor in the cytoplasm of your cells”
Listen at 18:39
L-carnitine, creatine, and betaine do not need cycling.
“No reason to cycle any of those.”
Listen at 18:59
Correcting vitamin D deficiency can optimize testosterone.
“if you have deficient vitamin D and you replace it, then you will optimize your testosterone.”
Listen at 19:47
Boron can acutely lower very high SHBG.
“if you have a very high shbg, boron can acutely help lower it.”
Listen at 19:54
Tongkat Ali may be especially effective during low-carb diets or caloric deficits.
“if you are not expecting as much growth hormone, insulin and IGF1, for example, lower carb diets, caloric deficits, you're trying to cut body fat or body weight, then Tongkat is going to be theoretically especially powerful.”
Listen at 21:45
Recommended Tongkat Ali dosage ranges from 300 to 1,200 milligrams daily.
“Anywhere from 300 to 1200 milligrams a day.”
Listen at 22:06
Tongkat Ali increases total and free testosterone even with normal SHBG.
“Yes, it'll increase their total and free testosterone.”
Listen at 23:29
Fadogia agrestis increases pituitary release of luteinizing hormone.
“it increases the release of luteinizing hormone from the pituitary”
Listen at 25:23
Fadogia agrestis increases testosterone release.
“it will increase the release of testosterone.”
Listen at 25:33
An alternative Fadogia regimen is 600 milligrams every other day or three times weekly.
“another regimen that I have people take is 600 milligrams every other day or 600 milligrams three times a week”
Listen at 26:39
Initial testosterone therapy commonly uses 100–120 milligrams divided across a week.
“a general normal dosing range, especially for someone starting, is around 100 to 120 milligrams divided over the course of a week.”
Listen at 28:24
Testosterone therapy at 200 milligrams weekly often exceeds the reference range.
“for many people, even 200 milligrams a week is far above the reference range.”
Listen at 29:00
Testosterone therapy can occasionally induce manic or bipolar episodes.
“Occasionally it even induces a manic or a bipolar episode because testosterone is also dopaminergic.”
Listen at 30:16
Clomiphene increases testosterone in a dose-dependent manner.
“It will increase testosterone in a dose dependent manner”
Listen at 32:06
SERMs should rarely be prescribed for long-term testosterone optimization.
“CIRM should not be prescribed very often, certainly not as long term testosterone replacement or testosterone optimization.”
Listen at 33:05
Clomiphene can cause visual changes, particularly at higher doses.
“Clomid can inhibit receptors that are in the eye and it can cause visual changes, blurry vision, especially at higher doses.”
Listen at 33:37
Alcohol significantly increases aromatase activity in a dose-dependent manner.
“It significantly does. There is a dose dependence.”
Listen at 35:25
Alcohol intake should generally remain at three to four standard drinks or fewer.
“In general, I would not recommend more than three to four standard drinks.”
Listen at 35:28
Alcohol can decrease testosterone through effects on LH and FSH release.
“that can also decrease testosterone, almost kind of similar to how opiates can decrease testosterone.”
Listen at 36:01
Tadalafil increases androgen-receptor density.
“it increases the density of the androgen receptor, similarly to L Carnitine.”
Listen at 37:39
Tadalafil approximately halves nocturia episodes.
“if you give it to people with nocturia, which is urinating at night in general, it will cut the episodes in half.”
Listen at 37:48
Topical finasteride usually lowers systemic DHT by about 30%.
“If you take topical finasteride, then usually your systemic DHT will decrease by about 30%.”
Listen at 39:48
Topical dutasteride does not affect systemic DHT.
“topical dutasteride will not affect your systemic DHT at all.”
Listen at 40:03
Statements are attributed to the speaker as said on the episode and reflect their view at the time, not PodLume's. They are not advice.