DHEA-S
The most abundant circulating adrenal steroid and a precursor feeding both androgen and estrogen pathways. The sulfated form is stable through the day, making it the preferred measurement.
An index of adrenal output that declines predictably with age — commonly supplemented in longevity and hormone protocols, and often low in chronic stress states.
The plan of attack
In this order. Most people start at step four, which is why they change five things at once and learn nothing.
- Confirm the number is real
Age. Falls steadily from the twenties onward in everyone, so a 'low' result in a 60-year-old against a general adult range is often just age. Use an age-matched range. - Read it with its partner
Check estradiol before and after starting DHEA — this is the step people skip. Draw it alongside: Cortisol (AM), Total Testosterone, Estradiol, Standard (ECLIA). - Work out which direction is yours
If it's high — In women: acne, hair loss, hirsutism. Markedly elevated values warrant investigation for adrenal pathology.
If it's low — Fatigue, low libido, poor stress resilience, reduced wellbeing. - Fix it in this order
Nutrition. No strong direct dietary lever; adequate energy availability supports adrenal steroidogenesis.
Lifestyle. Manage chronic stress and sleep — the same levers that fix cortisol dysregulation.
Supplements. DHEA (men), (women) — start low. It converts to both testosterone and estradiol, so monitor E2 and, in women, watch for androgenic effects. Pregnenolone is the upstream alternative.
Hormones. Because DHEA aromatizes, supplementing without checking estradiol is a common self-inflicted problem. In women especially, dosing should be conservative and monitored.
Compounds. No direct peptide interaction, though adrenal health underpins the whole endocrine picture.
Work down the list, not across it. Adding a compound on top of an unfixed diet is why generic protocols fail. - Retest
8–12 weeks after starting or changing dose. Change one thing at a time, or the retest can't tell you which thing worked.
How to fix it
📚 Orentreich N et al., J Clin Endocrinol Metab 1984 — age-related DHEA-S decline.
🩸 Test your DHEA-S
Order directly through Marek Diagnostics — no doctor's visit needed, drawn at any Quest location in the US. Code CAMERON applies 10% off automatically.
Order this test — 10% off → Browse all 102 markers →What DHEA-S is usually tested alongside
On its own, one marker is a data point. These panels include DHEA-S plus the markers that make it interpretable — each names every test, why it is on the list, and loads the whole set into your cart in one click at 10% off.
includes this + 7 more markers — Wired-and-tired, crashing mid-afternoon, salt cravings, dizzy on standing, or you've been told you have 'adrenal fatigue'.
includes this + 7 more markers · built for women — Acne along the jawline, chin and neck that flares before your period, persisting or starting in your 20s, 30s or 40s.
includes this + 9 more markers · built for women — Widening part, thinning at the crown, more hair in the shower drain, or a ponytail that's visibly thinner than it was.
What moves your DHEA-S
2 supplements in the Vault have a documented effect on this marker, or are a reason to have measured it first:
Browse all 237 compounds & 350 supplements →
Would you feel it? Symptoms DHEA-S helps explain
People rarely search for a marker — they search for how they feel. These are the complaints where this marker is worth checking, and whether it is a first-line test or a follow-up once the obvious causes are ruled out.
Why your DHEA-S might be wrong
Most abnormal results are interference, not disease. These are the things that measurably move this specific marker — check them before you change anything. Each one says whether the number is wrong and should be repeated, badly timed and should be redrawn, or real with a cause worth explaining.
Falls steadily from the twenties onward in everyone, so a 'low' result in a 60-year-old against a general adult range is often just age.
Use an age-matched range.
DHEA supplementation raises DHEA-S directly and substantially; corticosteroids suppress it through the same feedback that suppresses ACTH.
Stop DHEA supplements at least a week before a diagnostic draw, and declare every steroid route.
What DHEA-S means in combination
A single marker tells you a little. Combinations tell you the story — these are the named patterns this marker takes part in, and what each one points at.
Points upstream of the ovary. Markedly raised 17-OHP suggests non-classic congenital adrenal hyperplasia, which is routinely mislabelled as PCOS and managed the wrong way for years.
An 8am 17-OHP is the discriminating test — this is worth getting right, because NCAH and PCOS are treated differently. Bring it to an endocrinologist rather than treating it as PCOS by default.
Sustained overreaching — training load, sleep debt, energy deficit or life stress. The body down-regulates output across the board, which looks like several separate hormone problems and is really one.
No peptide or supplement outruns this. Deload, sleep, eat more, and cut total stressors for 4–8 weeks, then retest. If morning cortisol is genuinely low rather than low-normal, adrenal insufficiency needs excluding properly.
What to test next
Markers rarely answer alone. These are the ones that put DHEA-S in context — each with its own full breakdown.
Frequently asked questions
Age-dependent: ~280–640 µg/dL in the 20s → ~40–330 µg/dL by the 70s Ranges vary by laboratory and assay — always compare to the range printed on your own report.
Upper half of the age-adjusted range.
In women: acne, hair loss, hirsutism. Markedly elevated values warrant investigation for adrenal pathology.
Fatigue, low libido, poor stress resilience, reduced wellbeing.
You can order DHEA-S directly through Marek Diagnostics without a doctor's visit — drawn at any Quest Diagnostics location in the US. Code CAMERON applies 10% off automatically.