DHEA
Best-in-class: DHEA
An adrenal prohormone that declines steeply with age and serves as a precursor to testosterone and estrogen — used for hormonal, mood, bone and vitality support in older adults.
DHEA quick facts
| Suggested dose | 25–50 mg daily (women often lower); test hormones and adjust. |
| How often | Daily |
| Who it's for | Older adults with low DHEA supporting hormones, mood and bone. |
The best evidence is in women rather than men: vaginal DHEA is an approved treatment for genitourinary syndrome of menopause, and oral DHEA improves wellbeing and libido in adrenal insufficiency. In men with functioning testes it mostly aromatizes. Because it converts to both hormones it is genuinely contraindicated in hormone-sensitive cancers, and it is banned in most sport. Test DHEA-S before and after rather than dosing blind.
How DHEA actually works
An adrenal prohormone that converts peripherally to both testosterone and estradiol, with the direction depending on tissue enzyme expression — aromatase-rich tissue makes estrogen, 5-alpha-reductase-rich tissue makes androgen. It also has direct activity as a neurosteroid at GABA-A and NMDA receptors, independent of its conversion products. Levels peak in the twenties and fall steeply with age.
Where to get DHEA
Find DHEA on iHerb →The evidence for DHEA
Graded by what exists behind each claim.
✅ Clinically validated
- RCTs show benefits for bone density, mood, skin and (in women) libido, especially in those with low DHEA.
- Raises downstream testosterone/estrogen in deficient individuals.
📊 Correlative data
- DHEA falls ~80% from youth to old age, tracking with vitality decline.
🧪 Theoretical / extrapolated benefits
- Anti-aging benefits are meaningful mainly when correcting a genuine age-related decline.
How to read these tiers: they say how much human evidence exists, not how well something works — and ✗ flags harm, never a disappointing trial. How the evidence tiers work →
What DHEA actually does
Dehydroepiandrosterone is not a hormone with a target so much as a circulating reservoir that each tissue draws on privately, and that is why a serum number tells you so little about the effect. The adrenal zona reticularis secretes it, mostly as the sulfate, and the sulfate circulates at micromolar concentrations with a half-life of hours to a day, against unsulfated dehydroepiandrosterone at nanomolar concentrations with a half-life measured in minutes. The sulfate is the tank; the free steroid is the working fluid.
Conversion happens inside the target cell, which is the concept the label never uses. Steroid sulfatase removes the sulfate locally, then 3-beta-hydroxysteroid dehydrogenase makes androstenedione, 17-beta-hydroxysteroid dehydrogenase makes testosterone, 5-alpha-reductase makes dihydrotestosterone, and aromatase makes estrogens. Skin, fat, breast, prostate and brain each express a different subset of those enzymes, so the same circulating precursor produces a different hormone mixture in each tissue Tang 2021. That is intracrinology, and it means the systemic assay is a poor proxy for what any one tissue did with the dose.
The set point is adrenal and it falls with age by construction. The zona reticularis is the innermost adrenal cortical zone, it expands at adrenarche and it involutes across adult life, so dehydroepiandrosterone sulfate declines from the twenties onward while cortisol from the neighboring zona fasciculata does not Warde 2023. The decline is a structural change in a gland, described in the aging literature as a form of adrenal cortical senescence Short 2025, rather than a shortage of a substrate.
Which reframes what supplementation can be. Swallowing the precursor refills the reservoir. It does not restore the diurnal pattern, the pituitary control or the tissue that made it, and the downstream hormone produced depends on which enzymes the tissue expresses Tang 2021. The relationship between dehydroepiandrosterone, cortisol and aging has its own literature for exactly this reason Erceg 2025.
Cell, rodent, human — and where it stops
The human evidence is clearest where the biology is simplest, and it is clearest in women.
What has been pooled. A meta-analysis of randomized controlled trials examined the impact of dehydroepiandrosterone supplementation on testosterone and estradiol in postmenopausal women, with attention to dose and duration He 2025. Its use as a sex hormone precursor in premenopausal and postmenopausal women has been reviewed separately Tang 2021.
The specific obstacle is that the same dose is a much larger intervention in a woman than in a man. A postmenopausal woman produces very little gonadal androgen, so an oral precursor is a large proportional increase in her total androgen supply and reliably moves testosterone and estradiol He 2025. A middle-aged man's testes produce several milligrams of testosterone daily, so the same capsule is a small proportional addition, which is why the male trials are so much less impressive.
The second obstacle is the noise in the measurement. The European biological variation study reports the within-person and between-person biological variation of dehydroepiandrosterone sulfate and testosterone in men Itkonen 2024. Those figures are the reason a single before-and-after pair of results cannot tell one person whether anything happened, and almost every anecdote in this category is exactly such a pair.
And the aging claim runs on association. Levels fall with age Warde 2023 Short 2025 and low levels track poor outcomes Erceg 2025. Neither of those is evidence that raising the level reverses anything, and the trials that tested vitality endpoints in older adults have been unimpressive.
DHEA — which form, and does it matter
Oral micronized dehydroepiandrosterone is what the trials used and the particle size is not a marketing word. It is a poorly water-soluble steroid, so dissolution limits absorption; micronization raises the surface area and is why the studied products specify it. A non-micronized powder is a different exposure at the same milligrams.
Oral dosing puts the liver first, and the liver is a sulfating organ. A large first-pass fraction is converted to the sulfate, so an oral dose raises dehydroepiandrosterone sulfate far more than it raises free dehydroepiandrosterone. That is not necessarily a problem, since the sulfate is the reservoir the tissues draw on Tang 2021, and it does mean the two blood tests answer different questions.
7-keto-dehydroepiandrosterone is a different molecule sold under a similar name. It is a metabolite that is not converted to testosterone or estradiol, which is the entire reason it exists as a product. Anyone who wants the androgenic effect will not get it from 7-keto, and anyone who wants to avoid the androgenic effect should not be buying plain dehydroepiandrosterone.
And a vaginal preparation is a different pharmacology again. Local intravaginal dehydroepiandrosterone acts through the same intracrine conversion in local tissue with much smaller systemic exposure Tang 2021, which is a prescription decision and is not what a shelf capsule does.
What would have to be true, and how you would know it was not
1. The reservoir prediction, at 8 weeks. Dehydroepiandrosterone sulfate before and after. Predict a clear rise, because oral dosing loads the sulfate pool Tang 2021. Predict also that this rise says nothing on its own about the downstream hormones.
2. The downstream prediction, and it is sex-dependent. Total testosterone and estradiol at the same timepoints. Predict a clear rise in a postmenopausal woman He 2025 and a much smaller, often undetectable change in a man with normal gonadal function.
3. The variation control, which most people skip and which decides whether the first two mean anything. Draw at the same time of morning, fasted, and repeat any surprising result before acting on it, because the within-person biological variation of these analytes is substantial Itkonen 2024.
4. The visible-effect prediction, which is also the dose warning. Acne, oily skin, scalp shedding and irritability are the dose-related androgenic effects, and in women facial hair growth and voice change indicate too much. Predict these appear before any subjective benefit does, which makes them the practical read-out rather than a side effect to tolerate.
5. The experiment that would test the aging claim properly. Randomize older adults with low dehydroepiandrosterone sulfate to supplementation or placebo for a year with grip strength and a validated function battery as the endpoint. Prediction: the biomarker rises and function does not, because the fall is a structural change in a gland rather than a deficiency Warde 2023 Short 2025.
What nobody has tested yet
Nobody knows what a supplemented tissue actually makes. Conversion is intracrine and enzyme-dependent by tissue Tang 2021, and no human study has measured intraprostatic, intramammary or intracerebral steroid production after oral supplementation.
Nobody has established a target level. The decline with age is described Warde 2023, and there is no evidence-based definition of the concentration a supplement should aim at, which means every dose in this category is chosen by convention.
Nobody has followed long-term hormone-sensitive tissue outcomes. The molecule is a precursor to both estrogens and androgens Tang 2021 He 2025, and no trial has run long enough or large enough to say anything about breast or prostate endpoints.
And nobody has tested whether it suppresses adrenal output. Every exogenous hormone raises the question, the adrenal androgen zone is under its own regulation Short 2025 Erceg 2025, and no study has measured recovery of endogenous production after stopping.
DHEA — its own safety story, not its category's
This is a hormone rather than a nutrient, and the safety page has to start there. It converts to both testosterone and estradiol, in proportions set by the person and by the tissue Tang 2021 He 2025, so the effects are not predictable from the dose alone and are not the same for two people taking the same capsule.
Hormone-sensitive conditions are the hard line. Anyone with a history of breast, ovarian, endometrial or prostate cancer, or with a condition managed by suppressing sex hormones, should treat this as a prescriber's decision and not a shelf one He 2025.
The androgenic effects in women can be slow to reverse. Facial hair and voice change are not simply signs of too much; they are the two that do not always resolve on stopping. Acne, oily skin and scalp shedding usually do.
Sustained use suppresses your own production, as any exogenous hormone does, and the recovery has not been characterized Short 2025. That is an argument for testing, for a defined purpose and for a defined stopping point rather than for indefinite daily use.
Two practical notes. It is banned by most sporting bodies and will produce an adverse analytical finding, which catches masters athletes every year. And it is often taken alongside an aromatase inhibitor to blunt the estrogen conversion, which is stacking two endocrine interventions and moves this firmly out of supplement territory Erceg 2025. Nothing here is medical advice, this page diagnoses and treats nothing, and none of these statements has been evaluated by the Food and Drug Administration.
Sources read for this page
- Warde KM. Age-related Changes in the Adrenal Cortex: Insights and Implications. J Endocr Soc 2023 · PMID 37564884
- Short E. Adrenal cortex senescence: an ageing-related pathology?. J Endocrinol Invest 2025 · PMID 40131721
- Tang J. The Utilization of Dehydroepiandrosterone as a Sexual Hormone Precursor in Premenopausal and Postmenopausal Women: An Overview. Pharmaceuticals (Basel) 2021 · PMID 35056103
- He S. Impact of DHEA supplementation on testosterone and estradiol levels in postmenopausal women: a meta-analysis of randomized controlled trials assessing dose and duration effects. Diabetol Metab Syndr 2025 · PMID 40616152
- Erceg N. The Role of Cortisol and Dehydroepiandrosterone in Obesity, Pain, and Aging. Diseases 2025 · PMID 39997049
- Itkonen O. The European biological variation study (EuBIVAS): Biological variation data for testosterone, follicle stimulating hormone, prolactin, luteinizing hormone and dehydroepiandrosterone sulfate in men. Clin Chim Acta 2024 · PMID 38341016
How you would know if it worked
These are the markers that recommend this product on their own pages, so they are the ones that should move if it is doing what it is sold for.
- DHEA-S — DHEA 25–50 mg (men), 5–25 mg (women) — start low Retest: 8–12 weeks after starting or changing dose.
- DHEA — If supplementing DHEA, monitor estradiol and testosterone — it converts into both Retest: 8–12 weeks after starting supplementation.
- Anti-Müllerian Hormone (AMH) — CoQ10 and DHEA are used in fertility clinics for egg quality in some protocols — evidence is mixed and this belongs with a reproductive endocrinologist Retest: As guided by a fertility specialist.
- Androstenedione — Note DHEA supplementation raises androstenedione — a common cause of unexpected androgenic side effects in women Retest: 12 weeks after intervention.
Draw before you start, not after. A result with nothing to compare it to answers nothing.
DHEA — safety & side effects
- A hormone, not a herb — it converts to both testosterone and estrogen, and how much of each depends on your age, sex and body composition. Acne, oily skin, hair shedding and irritability are the common dose-related effects; in women, facial hair and voice changes signal too much and are not always fully reversible.
- Suppresses your own production with sustained use, like any hormone. It is also banned by WADA and most tested sporting bodies.
- Do not use without bloodwork. DHEA-S, total and free testosterone, estradiol and SHBG before starting and at 8–12 weeks — this is the clearest case in the whole catalog for testing rather than guessing.
The same on every page it applies to. Read it here; it is not repeated research.
- Avoid if you have or have had a hormone-sensitive cancer (breast, ovarian, uterine, prostate) without oncology input. The mechanism that makes it useful is the mechanism that makes it a question in that setting.
Not medical advice. If you take prescription medication or have a diagnosed condition, check this against it with a pharmacist or doctor — pharmacists are underused and free.
- When to take it, and what to take it with
- Which form actually absorbs
- Who it's worth it for
- Best-in-class brand pick
- Coach Cam's stacks and notes
- Fasted or with food, and when in the day
- Morning or night, and why that window
- Around training, or deliberately away from it
- What it must not share a window with
Everything above is free and stays free. Skool is where it becomes a plan — DHEA in an order, with the rest of what you're running.
Unlock in Skool — $10/mo →Bloodwork to run alongside DHEA
Baseline first, then again at 8–12 weeks.
| Marker | What it’s watching for |
|---|---|
| DHEA-S | The marker to dose against — DHEA is not a supplement to guess at |
| Total Testosterone | It converts to testosterone, at rates that vary by person |
| Estradiol, Sensitive (LC/MS-MS) | And to estrogen, which is the half people forget |
| SHBG (Sex Hormone-Binding Globulin) | Determines how much of the result is actually active |
The “Low T? Rule Out the Reversible Causes First” panel covers these in one order — 11 markers, $211.50 with the discount applied.
Check results you already have → · All 103 markers A–Z
DHEA — frequently asked questions
What is DHEA?
An adrenal prohormone that declines steeply with age and serves as a precursor to testosterone and estrogen — used for hormonal, mood, bone and vitality support in older adults.
What is the suggested dose of DHEA?
25–50 mg daily (women often lower); test hormones and adjust. This is a general reference for education only — statements have not been evaluated by the FDA and this is not medical advice.
Where can I find DHEA dosing and the full breakdown?
The suggested dose and the full evidence — clinical, correlative and theoretical — are on this page. What's inside Skool is when to take it, which form actually absorbs, the brand worth buying and Coach Cam's stacks.
Where can I buy DHEA?
Coach Cam sources DHEA from vetted, top-rated brands on iHerb — use the buy link on this page.
DHEA inside a finished plan
One arm of 3 Protocol Blueprints, free to read in full.
What DHEA is used for
DHEA appears under 3 goals in the goal router.
Related Hormonal & Wellness supplements
Where this goes next
DHEA is the shbg arm of this plan. The page above is the free breakdown of one compound; the plan it belongs to — the dosing, the order to correct things in, the week-by-week schedule and what to retest — is a lesson inside Skool.