Normal DHEA Levels by Age and Sex Chart

DHEA-S, the sulfated and most commonly measured form of dehydroepiandrosterone, follows one of the most dramatic age-related curves of any hormone in the human body. Levels are briefly elevated in newborns, drop to near-zero in early childhood, rise sharply during a process called adrenarche around ages six to eight, peak in the early twenties, and then fall steadily for the rest of life. By the time you reach your seventies, your circulating DHEA-S is typically only about a fifth of what it was at its peak. Men carry higher levels than women through most of adulthood, but the pattern of rise and decline is broadly similar in both sexes.

What DHEA-S Levels Look Like Across a Lifetime

The classic trajectory of DHEA-S has been mapped in large cross-sectional studies and is remarkably consistent. In men, the DHEA-S concentration peaks between ages 20 and 24, with an average around 3,470 ng/mL. In women, the peak comes a bit earlier, between ages 15 and 19, at an average of about 2,470 ng/mL. From there, levels decline steadily in both sexes. By age 70 and beyond, men average roughly 670 ng/mL and women about 450 ng/mL.¹ That is a decline of roughly 80% from peak to old age, and it is steep enough that researchers have given it a name: adrenopause.

The decline accelerates after about age 40. A study of women at different elevations found that the decay of DHEA-S from age 40 onward was consistent across populations, though women living at high altitude experienced a steeper and earlier drop compared to those at sea level.² This suggests that factors beyond simple aging, including oxygen availability and chronic stress, can shape the rate at which DHEA-S falls.

Typical Reference Ranges by Age and Sex

Laboratories report DHEA-S in various units (μg/dL, ng/mL, μmol/L), which adds confusion when comparing results. The ranges below are approximate and drawn from published data. Your lab report will include its own reference interval, which may differ slightly depending on the assay used. These figures give a general sense of what to expect at each life stage.

• Newborns (0–6 months): Levels are transiently high due to the large fetal adrenal gland, then fall sharply. In healthy infants, DHEA-S drops below about 40 μg/dL by roughly half a year of age.
• Children (1–6 years): Levels are at their lifetime low, often below the detection threshold of some assays. This is the quiet period before adrenarche.
• Adrenarche (6–10 years): DHEA-S begins climbing again. The threshold of 40 μg/dL is crossed at around age 7 in boys and age 8 in girls.
• Adolescence (10–19 years): Levels rise steeply through puberty, with girls reaching their peak range toward the end of this period. Males continue to climb into their early twenties.
• Young adults (20–30 years): Men typically range from roughly 2,800 to 6,400 ng/mL; women from about 1,700 to 4,000 ng/mL. This is the lifetime peak window.
• Middle age (40–50 years): Levels have already dropped substantially. Typical ranges are about 1,200–3,500 ng/mL for men and 800–2,500 ng/mL for women, though individual variation is wide.
• Older adults (60–70+ years): Men average around 700–1,000 ng/mL; women around 400–700 ng/mL, with many individuals falling below these values.

The reference data establishing peak values in men at 20–24 and in women at 15–19, along with the age-matched sex differences, comes from one of the foundational studies that clinicians still use as a baseline.¹ For pediatric and adolescent reference ranges, more recent work has defined age- and puberty-stage-specific cutoffs.³

The Sex Difference Is More Complicated Than It Looks

DHEA-S is consistently higher in men than in women from roughly age 20 through age 69. That much is straightforward. But unconjugated DHEA, the non-sulfated form, tells a different story. In certain age windows, women actually have higher circulating DHEA than men. This reversal is significant during puberty (ages 11 to 15), the premenopausal years (roughly 36 to 45), and again after age 60.⁴

This matters because DHEA and DHEA-S, while related, are not interchangeable markers. DHEA-S is the form most commonly ordered on lab panels because it circulates in much higher concentrations and is more stable throughout the day. But the unconjugated form is the biologically active precursor that peripheral tissues actually convert into sex hormones. If your doctor orders only DHEA-S, the result gives a good sense of your adrenal androgen pool but may not capture the full picture of what active DHEA is doing in your tissues.

Why DHEA-S Is the Preferred Lab Test

Unconjugated DHEA fluctuates throughout the day, much like cortisol. DHEA-S, by contrast, has a long half-life in blood and varies less from hour to hour. That said, DHEA-S is not completely flat. Older research found a diurnal swing of about 15 to 30%, with the highest values at midday or late afternoon and the lowest around midnight or early morning.⁵ Most labs draw blood in the morning, so reference ranges are generally calibrated to morning samples. If your blood was drawn in the afternoon, your result could read somewhat higher than a morning draw would have shown.

The assay itself also matters. Most hospital labs measure DHEA-S using immunoassays, which are fast and inexpensive but not always precise. A comparison of seven commercial immunoassays against a gold-standard mass spectrometry method found that only three agreed closely with the reference. Four showed meaningful calibration problems, with slopes ranging from 0.84 to 1.28, meaning some assays were reading 16% low or 28% high.⁶ In newborns and very young infants, the problem is even more dramatic: one immunoassay platform showed a 166% positive bias compared to mass spectrometry, essentially reading more than two and a half times too high.⁷ The practical takeaway: when comparing your results over time, try to use the same lab, and be aware that a shift in numbers might reflect a change in assay rather than a change in your body.

The Childhood Surge and the Start of Adrenarche

Newborns enter the world with a large, active fetal adrenal gland that churns out DHEA-S to supply the placenta with precursors for estrogen production during pregnancy.⁸ Once the baby is born and the placenta is gone, that fetal zone of the adrenal gland shrinks rapidly. DHEA-S plummets within the first few months, reaching its lifetime nadir by about age one. Levels then stay very low for years.

The next big change is adrenarche, which begins in early childhood and is marked by the gradual reawakening of DHEA-S production. This process is best understood as a maturation of the adrenal gland’s inner layer, the zona reticularis, which becomes the primary factory for DHEA and DHEA-S in adulthood.⁹ In healthy children, DHEA-S first crosses back above 40 μg/dL at around age 7 in boys and age 8 in girls.³ Premature adrenarche, where this rise happens too early, is one reason pediatricians order DHEA-S testing in young children who develop pubic hair or body odor ahead of schedule.

Where DHEA-S Comes From and What Your Body Does With It

Almost all circulating DHEA-S is made in the zona reticularis of the adrenal cortex. That layer has a distinctive enzyme profile: it expresses high levels of the sulfation enzyme SULT2A1 but very low levels of an enzyme called 3β-hydroxysteroid dehydrogenase, which would otherwise convert DHEA into other steroids like cortisol.¹⁰ The result is that this layer funnels its output almost entirely toward DHEA and DHEA-S rather than cortisol.¹¹

Once DHEA-S reaches the bloodstream, it acts as a reservoir. Peripheral tissues, including skin, bone, fat, muscle, and the brain, can strip off the sulfate group and convert DHEA into more potent sex hormones like testosterone and estradiol. This happens locally within individual cells, allowing each tissue to adjust its own hormone exposure without affecting the rest of the body.¹² This is why the age-related fall in DHEA-S matters: it gradually shrinks the raw-material pool that your tissues draw on to make their own androgens and estrogens.¹³

What Abnormally High Levels Can Mean

A DHEA-S result well above the reference range for your age and sex raises a few possibilities. In younger women, polycystic ovary syndrome (PCOS) is a common culprit. About a third of women with PCOS in their twenties have been found to have elevated DHEA-S above 3 μg/mL (300 μg/dL), and those with elevated levels tend to have higher testosterone and androstenedione as well.¹⁴ Congenital adrenal hyperplasia, adrenal tumors, and Cushing syndrome are rarer causes your doctor may investigate if DHEA-S is markedly elevated.

An important nuance: DHEA-S also spikes during acute stress. In military personnel exposed to high-stress survival training, DHEA-S roughly doubled from baseline, rising from about 28 μg/dL to 60 μg/dL during the stress exposure.¹⁵ If your blood was drawn during a period of extreme physical or psychological stress, your result could look artificially high.

What Abnormally Low Levels Can Mean

Low DHEA-S is expected as you age, so the question is always “low for your age” rather than “low in absolute terms.” In younger people, genuinely suppressed DHEA-S can signal primary adrenal insufficiency (Addison’s disease), in which the adrenal glands fail to produce adequate hormones across the board. In Addison’s disease, the near-total loss of DHEA synthesis is not typically corrected by standard glucocorticoid replacement, leaving patients with very low or undetectable DHEA-S even when their cortisol is being replaced.¹⁶

Certain medications also push DHEA-S down. Dexamethasone and other glucocorticoids suppress the pituitary signal (ACTH) that drives adrenal androgen production, which in turn lowers DHEA and DHEA-S concentrations.¹⁷ If you are taking corticosteroids for asthma, autoimmune conditions, or organ transplant, a low DHEA-S result may reflect medication effects rather than adrenal disease.

Low DHEA-S and Heart Disease

A growing body of evidence links lower DHEA-S to worse cardiovascular outcomes, though the relationship is observational and does not prove cause and effect. A systematic review and meta-analysis of studies in patients with existing cardiovascular disease found that lower DHEA-S was associated with a roughly 47% higher risk of death from any cause, a 58% higher risk of fatal cardiovascular events, and a 42% higher risk of nonfatal cardiovascular events compared to higher levels.¹⁸ A separate study in men with type 2 diabetes found that higher DHEA levels were associated with significantly lower odds of coronary heart disease, even after adjusting for other risk factors.¹⁹

These findings have fueled interest in whether raising DHEA-S through supplementation could protect the heart. So far, the evidence from intervention trials has not delivered on that promise, as covered in the next section.

Does DHEA Supplementation Help?

Given the dramatic decline with age and the associations with disease, it seems intuitive that replacing DHEA would be beneficial. The reality has been disappointing. A well-known trial published in the New England Journal of Medicine gave elderly men either DHEA or low-dose testosterone, and elderly women DHEA, for two years. The conclusion was blunt: neither DHEA nor low-dose testosterone had meaningful beneficial effects on body composition, physical performance, insulin sensitivity, or quality of life.²⁰

Cognitive function has been another hoped-for benefit. The DAWN (DHEA and Well-Ness) trial randomized healthy older adults to DHEA or placebo and tracked cognitive performance over time. There were no differences between the two groups on any cognitive measure, and no meaningful differences in well-being, life satisfaction, or sexual function.²¹ A Cochrane review on DHEA for cognitive function in healthy older people echoed the lack of demonstrated benefit, though it noted that supplementation appeared well tolerated with no significant side effects.²²

The one population where DHEA replacement has clearer physiological effects is people with Addison’s disease, whose adrenals produce virtually no DHEA. In that specific group, 50 mg of daily DHEA raises circulating DHEA-S and androstenedione, and brings testosterone into the low-normal range in women.¹⁶ For people with healthy adrenals who are simply experiencing the normal age-related decline, the evidence does not support supplementation for general anti-aging purposes.

DHEA in the Brain

DHEA has an interesting double life as a neurosteroid. It is not only made by the adrenal glands but also synthesized locally in the brain, where concentrations are actually higher than in blood plasma.²³ In the brain, DHEA and DHEA-S interact with receptors involved in learning, memory, and neuronal survival. DHEA-S enhances signaling through NMDA receptors (which strengthen neural connections) and damps down certain inhibitory circuits. Both forms appear to have neuroprotective properties and reduce neuroinflammation in laboratory models.

Whether the age-related decline of DHEA-S contributes meaningfully to cognitive aging in humans is still unresolved. The supplementation trials described above suggest that simply topping up blood levels in healthy older adults does not translate into cognitive improvement. One possibility is that the brain’s local production of DHEA operates somewhat independently of what is happening in the blood, which would explain why raising circulating levels with a pill does not necessarily change what is happening at the neural level.

DHEA During Pregnancy

Pregnancy is one of the few life stages where DHEA-S has a clear, well-understood functional role beyond serving as a reservoir. The fetal adrenal gland is proportionally enormous, and the fetal zone of that gland produces large quantities of DHEA-S. The placenta cannot manufacture estrogens on its own; it lacks the early enzymatic steps. Instead, it relies on DHEA-S supplied by both the fetal and maternal adrenal glands as the raw material for estrogen synthesis.²⁴ Fetal DHEA-S is especially important for producing estriol, the dominant estrogen of pregnancy.⁸ This maternofetal collaboration is sometimes described as a single hormonal unit: neither the mother nor the fetus can produce adequate pregnancy estrogens alone.²⁵

An Evolutionary Quirk of Primates

Most mammals produce very little DHEA or DHEA-S. The massive adrenal output of these hormones is largely unique to humans and other great apes, along with some Old World primates.²⁶ Adrenarche itself, the childhood rise in adrenal androgens, occurs only in humans and the African apes (chimpanzees and gorillas).²⁷ Researchers have speculated that the evolution of a robust adrenarche may be linked to the extended period of brain development and social learning that characterizes human childhood. The timing of adrenarche roughly coincides with the shift from early childhood into the “age of reason” phase, when children begin acquiring more complex cognitive and social skills. Whether DHEA-S plays a causal role in that developmental transition or is merely correlated with it remains an open question.

This evolutionary context helps explain why DHEA research in mice and rats often does not translate cleanly to humans. Rodents lack a functional zona reticularis and do not produce meaningful amounts of DHEA-S on their own. Studies that dose rodents with DHEA are essentially creating a hormonal situation that has no natural equivalent in those animals, which limits how much their results can tell us about what DHEA-S does in the human body.

DHEA-S in Centenarians

Studies of exceptionally long-lived people have looked at whether centenarians retain higher DHEA-S than their slightly younger peers. The answer is nuanced. DHEA-S continues to decline even past the ninth decade. What changes in centenarians is the relationship between DHEA-S and cortisol. In normal aging, the cortisol-to-DHEA-S ratio rises steadily because cortisol stays fairly stable while DHEA-S drops. This shifting ratio has been described as potentially neurotoxic, since cortisol has harmful effects on the brain when not balanced by the neuroprotective properties of DHEA-S. In centenarians, researchers have found that this ratio does not continue to climb further, suggesting that the very oldest old may have a hormonal balance that, while far from youthful, at least avoids the worst extremes of the cortisol-dominant pattern seen in late middle age and early old age.²⁸

Whether this reflects genetics, lifestyle, or survivorship bias (people with the worst cortisol-to-DHEA-S ratios dying before they reach 100) is impossible to tease apart from cross-sectional data. It is a provocative finding, but not one that tells you how to use your own DHEA-S number to predict how long you will live.