DHEA-S
Also known as: Dehydroepiandrosterone Sulfate
What Does DHEA-S Measure?
DHEA-S (Dehydroepiandrosterone Sulfate) is the sulfated form of DHEA, a steroid hormone produced primarily by the adrenal glands, with smaller amounts made by the ovaries and testes. A blood test measuring DHEA-S reflects the overall production capacity of the adrenal cortex, specifically the zona reticularis layer. Because DHEA-S has a much longer half-life in the bloodstream than DHEA itself — lasting hours to days rather than minutes — it serves as a more stable and reliable marker of adrenal androgen activity.
Why Does DHEA-S Matter?
DHEA-S is a precursor hormone that the body converts into more potent androgens like testosterone and estrogens, making it central to hormonal balance in both men and women. Clinically, it is used to investigate adrenal disorders such as adrenal insufficiency, congenital adrenal hyperplasia, and adrenal tumors. In women, elevated DHEA-S is a key marker in evaluating androgen excess conditions like polycystic ovary syndrome (PCOS), hirsutism, and virilization. Because DHEA-S naturally peaks in early adulthood and declines sharply with age, it is also studied as a biomarker of biological aging, adrenal reserve, and metabolic health. Low levels have been associated with fatigue, depression, reduced libido, and poor stress resilience.
Normal Ranges
Males
Adult males (18–69 years): 70–520 µg/dL (varies by age; peaks at 280–640 µg/dL in the 20s, declines to 51–295 µg/dL by age 60–69)
Females
Adult females (18–69 years): 45–380 µg/dL (varies by age; peaks at 145–395 µg/dL in the 20s, declines to 20–200 µg/dL after age 60; postmenopausal: 30–260 µg/dL)
Children
Varies by age and sex; newborns: 108–607 µg/dL (high due to fetal adrenal activity), drops sharply in infancy; rises again during adrenarche (ages 6–10): 10–120 µg/dL
Causes of High Levels
- Polycystic ovary syndrome (PCOS) — one of the most common causes of elevated DHEA-S in reproductive-age women due to adrenal androgen overproduction
- Congenital adrenal hyperplasia (CAH) — enzyme deficiencies (especially 21-hydroxylase deficiency) cause excess adrenal androgen synthesis including DHEA-S
- Adrenal tumors or adrenal carcinoma — benign adenomas and malignant tumors of the adrenal gland can autonomously secrete high amounts of DHEA-S
- Cushing's syndrome (adrenal cause) — adrenal cortex overactivity driven by excess ACTH or autonomous tumor secretion raises adrenal androgen output
- Stress and hyperprolactinemia — chronic physiological stress or elevated prolactin can stimulate adrenal androgen production
- Use of certain medications — drugs such as metformin, insulin, and some antidepressants have been associated with modestly elevated DHEA-S levels
Causes of Low Levels
- Adrenal insufficiency (Addison's disease) — destruction or dysfunction of the adrenal cortex significantly reduces DHEA-S output along with cortisol
How to Improve Your DHEA-S
Diet
- Consume adequate healthy fats including avocados, olive oil, nuts, and fatty fish, as cholesterol is the precursor to all steroid hormones including DHEA-S
- Eat a diet rich in antioxidants (colorful vegetables, berries, dark leafy greens) to reduce oxidative stress on adrenal gland function
- Ensure sufficient protein intake (0.8–1.2 g per kg body weight) to support hormone synthesis and stress resilience
- Limit refined carbohydrates, sugars, and ultra-processed foods that drive insulin resistance and chronic inflammation, which suppress adrenal function
- Include zinc-rich foods (oysters, pumpkin seeds, beef, legumes) and magnesium-rich foods (dark chocolate, spinach, almonds) to support adrenal and hormonal health
Supplements
- DHEA supplements (25–50 mg/day for adults over 40) — available over-the-counter in the US but should only be taken under medical supervision due to hormone-converting effects
- Ashwagandha (Withania somnifera) at 300–600 mg/day of a root extract — adaptogenic herb shown in clinical trials to support adrenal function, reduce cortisol, and modestly raise DHEA-S
- Vitamin D3 (1,000–5,000 IU/day depending on baseline levels) — low vitamin D is associated with impaired adrenal function and lower DHEA-S
Related Biomarkers
Frequently Asked Questions
What is the difference between DHEA and DHEA-S?
DHEA (dehydroepiandrosterone) and DHEA-S (dehydroepiandrosterone sulfate) are closely related hormones. DHEA-S is simply DHEA with a sulfate group attached, a conversion that happens mainly in the adrenal glands. Because DHEA circulates for only 15–30 minutes before being cleared, while DHEA-S lasts 7–10 hours in the bloodstream, DHEA-S is far more stable and reproducible as a blood test. Doctors typically measure DHEA-S rather than DHEA for this reason. Both can be converted into androgens like testosterone and estrogens in peripheral tissues.
Can low DHEA-S cause fatigue and depression?
Yes, low DHEA-S has been associated with symptoms including chronic fatigue, low mood, depression, reduced libido, and poor stress tolerance. DHEA acts as a neurosteroid in the brain, influencing mood-regulating neurotransmitter systems including GABA and NMDA receptors. Several clinical studies have found that DHEA supplementation in people with low levels or adrenal insufficiency can improve energy, mood, and sense of well-being. However, fatigue and depression have many causes, so a low DHEA-S level should be evaluated alongside other markers and symptoms by a healthcare provider.
Is it normal for DHEA-S to decline with age?
Yes, this is entirely expected. DHEA-S peaks in your mid-20s and then declines by approximately 2–5% per year throughout adulthood — a process sometimes called 'adrenopause.' By age 70–80, most people have only about 10–20% of their peak DHEA-S levels. This decline is associated with changes in energy, muscle mass, immune function, and skin quality that accompany aging. While some researchers and clinicians advocate DHEA supplementation in older adults for its potential anti-aging benefits, the evidence is mixed, and supplementation should always be guided by a healthcare professional.