DHEA-S
Adrenal steroid hormone serving as precursor for testosterone and estrogen
Also known as
Definition
Dehydroepiandrosterone sulfate (DHEA-S) is the sulfated derivative of DHEA and the most abundantly produced steroid hormone of the adrenal gland. DHEA-S is the body's primary circulating hormone reservoir, serving as a precursor for testosterone and estrogen in peripheral tissues. Levels peak at ages 25–30 and then decline continuously (~2% per year), making it a commonly used biomarker of biological aging.
| Parameter | Value |
|---|---|
| Unit | µmol/l (µg/dl) |
| Reference Range | Men: 2.2–15.5 µmol/l (age-dependent: age 30: ~9–15, age 60: ~3–8 µmol/l) | Women: 1.0–11.6 µmol/l (premenopausal; more strongly age-dependent) |
| Optimal Range (lab2go) | Men: 7–13 µmol/l | Women: 4–9 µmol/l (lab2go Optimum Zone — values of a healthy 30-year-old, age-adjusted) |
Conversion: 1 µmol/l = 36.1 µg/dl. US labs: Men 80–560 µg/dl, Women 35–430 µg/dl.
↓ What a low value means
Low DHEA-S occurs with advancing age (physiological), adrenal insufficiency (Addison's disease), chronic stress (cortisol prioritization), depression, and hormonal disorders. Associated with: fatigue, loss of libido, muscle wasting, elevated cardiovascular risk, cognitive decline, and reduced stress resilience.
↑ What a high value means
Elevated DHEA-S values can indicate congenital adrenal hyperplasia (CAH), adrenomyeloneuropathy, ACTH-producing tumor, or excessive supplementation. In women: androgenization signs (hirsutism, acne), PCOS. Values > 20 µmol/l warrant follow-up.
✓ How to optimize this marker
DHEA-S cannot be significantly raised by diet alone. Supplementation with DHEA (25–50 mg/day) for lab-confirmed deficiency under medical supervision. Sleep optimization and stress reduction spare the adrenals. The cortisol-to-DHEA-S ratio as a stress adaptation index: < 0.2 is favorable.
When to test
As part of a hormone panel from age 35 (anti-aging diagnostics), for fatigue workup, adrenal screening, androgenization signs in women, or reduced libido. DHEA-S is more stable than DHEA and requires no time-of-day standardization.
Frequently asked questions
Is DHEA the 'fountain of youth' hormone? +
DHEA-S is often called an anti-aging marker because it declines with age and correlates with vitality. Supplementation studies show mixed results: positive effects on bone density, libido, and well-being in adrenal insufficiency are well-documented; in healthy older adults, effects are more modest.
Can I supplement DHEA without medical advice? +
In many European countries DHEA is prescription-only. In the US it is available OTC. Supplementation should only occur for confirmed deficiency under medical supervision, as DHEA can be converted to testosterone and estrogen — with potential hormonal side effects.
What does the DHEA-S/cortisol ratio indicate? +
The DHEA-S/cortisol ratio is considered an indicator of the adrenal gland's stress adaptation capacity. With chronic stress, cortisol rises while DHEA-S falls, resulting in an unfavorably low ratio. A favorable ratio (DHEA-S substantially higher than cortisol) is associated with resilience, cardiovascular health, and longevity.
What is the difference between DHEA and DHEA-S? +
DHEA is the free form; DHEA-S is the sulfated depot. DHEA-S is about 1,000 times more abundant in blood, more stable, and better reflects adrenal DHEA production. DHEA-S is the preferred measurement in the lab. DHEA itself varies more diurnally and is harder to measure accurately.
Sources
- Labrie F (2010) DHEA, important source of sex steroids in men and even more in women. Prog Brain Res.
- Traish AM et al. (2011) DHEA — a precursor steroid or an active hormone in human physiology. J Sex Med.
- Panjari M, Davis SR (2010) DHEA therapy for women: effect on sexual function and wellbeing. Hum Reprod Update.
Last Reviewed: May 28, 2026 · sina
This information is for orientation only and does not replace medical advice. Reference ranges can vary by laboratory, method and country.