DHEA-S and aging

What DHEA-S reveals about the body

Dehydroepiandrosterone sulfate is the most abundant steroid hormone circulating in the blood. It is made mainly in the zona reticularis of the adrenal glands, the same tissue that produces cortisol. Cortisol rises and falls over the day in response to stress, meals and sleep, but DHEA-S stays relatively stable. That stability is what makes it a useful marker. A single blood draw can capture the baseline production capacity without the daily rhythm or acute stress responses blurring the measurement.

DHEA-S acts as a precursor for both androgens and estrogens. Tissues convert it locally, as needed, into testosterone, estradiol and other active hormones. In practice, DHEA-S serves mainly as a reservoir for local hormone production. When that reservoir shrinks, tissues have less flexibility to respond to hormonal and metabolic demands.

The decline starts at about age 30 and continues in a straight line:

• Peak levels occur in the mid-20s and range from 1.33 to 7.78 ng/ml.

• By age 40, this range falls to 0.63 to 4.7 ng/ml.

• By 70 to 80, many people keep only 10 to 20 percent of the levels they had as young adults.

• This pattern holds across populations and is one of the most consistent age-related hormonal changes in humans.

Behind the decline is the thinning of the zona reticularis, the layer of the adrenal cortex where DHEA-S is made. As this tissue shrinks, so does its production capacity.

How the decline in DHEA-S relates to the hallmarks of aging

The fall in DHEA-S does not happen in isolation. It mirrors several core aging processes and amplifies them. The adrenal zona reticularis thins with age, a form of tissue-specific stem cell exhaustion. The cells that renew the DHEA-S-producing tissue lose their ability to regenerate, and the tissue itself becomes less metabolically active. This is cellular senescence playing out in hormone-producing tissue.

Low DHEA-S also correlates with the chronic, low-grade inflammation of aging (“inflammaging”). Studies show that people with lower DHEA-S levels have higher circulating markers of systemic inflammation, including C-reactive protein and interleukin-6. Which is cause and which is effect remains unclear, but the association has been observed repeatedly. DHEA-S appears to have anti-inflammatory properties, and as levels fall, inflammatory activity rises. This sets up a feedback loop in which inflammation speeds up tissue aging, which suppresses DHEA-S production even further.

Mitochondrial dysfunction is another hallmark linked to the decline in DHEA-S:

• DHEA-S influences mitochondrial biogenesis and energy production in several tissues.

• When levels fall, cells lose some of their ability to generate ATP efficiently.

• This shows up as lower physical endurance, slower recovery after exertion and reduced muscle mass.

• The link between DHEA-S and muscle function is especially strong in older adults, in whom low levels point to sarcopenia and frailty.

Deregulated nutrient sensing plays a part as well. DHEA-S interacts with insulin signaling pathways and affects how cells respond to glucose. Lower DHEA-S is associated with insulin resistance and higher fasting insulin, both markers of metabolic aging. The hormone also modulates the hypothalamic-pituitary-adrenal axis, shaping how the body responds to stress over time. Chronic stress speeds up the decline in DHEA-S, and low DHEA-S lowers stress resilience, creating yet another reinforcing loop.

What makes DHEA-S levels rise or fall?

Chronological age is the dominant factor, but not the only one. Chronic stress speeds up the decline. A prolonged rise in cortisol (the primary stress hormone) suppresses DHEA-S production. Under sustained stress, the adrenal glands prioritize cortisol synthesis and DHEA-S production takes a back seat. This is why people with chronic stress-related conditions often have lower DHEA-S levels than expected for their age.

Sleep quality matters. Growth hormone (released during deep sleep) supports adrenal function. Poor sleep disrupts this process and contributes to faster adrenal aging. Studies show that people with chronic sleep deprivation have lower DHEA-S levels regardless of age.

Body composition plays a role. More visceral fat around the internal organs is associated with lower DHEA-S, probably through inflammatory pathways. Fat tissue (visceral fat in particular) secretes pro-inflammatory cytokines that suppress adrenal steroid production. Conversely, maintaining lean muscle mass correlates with better preservation of DHEA-S levels over time.

Exercise has mixed effects:

• Moderate endurance training and strength training appear to support DHEA-S production, possibly through better mitochondrial function and lower systemic inflammation.

• Chronic overtraining without adequate recovery can suppress DHEA-S, much as it suppresses other anabolic hormones.

• The dose-response curve is not linear.

Nutritional status affects DHEA-S indirectly. Deficiencies in key micronutrients such as zinc, magnesium and B vitamins impair adrenal function. Severe, longer-term calorie restriction can lower DHEA-S, even if it improves some other markers of aging. The adrenal glands need enough substrate to synthesize steroid hormones, and a large energy deficit undermines that capacity.

Why two people of the same age have different DHEA-S levels

Genetics accounts for a substantial share of the variation. Twin studies suggest that the heritability of DHEA-S levels is about 50 to 60 percent. Specific gene variants affect the activity of adrenal enzymes, especially those involved in steroid synthesis pathways. Some people are genetically inclined to keep higher DHEA-S levels well into old age, while in others the level drops faster.

The starting production reserve of the adrenal cortex also differs. Not everyone begins their twenties with the same peak levels. Those who start higher have more room to decline before they reach clinically low thresholds. This resembles the concept of cognitive reserve in brain aging: a larger starting reserve provides a buffer against age-related decline.

Cumulative stress load matters more than acute stress. Allostatic load (the wear and tear from repeated stress responses) predicts the decline in DHEA-S better than any single stressor. Adverse childhood experiences, chronic work stress and long-term caregiving all contribute to faster adrenal aging. DHEA-S may reflect this burden as it builds up over the years.

The hormonal environment affects DHEA-S differently depending on sex:

• Women see a steeper drop in DHEA-S during and after menopause, probably because ovarian production of estrogen, which supports adrenal function, declines.

• Men see a more gradual decline, although testosterone levels also influence DHEA-S production.

• The interplay of sex hormones and adrenal steroids produces individual variation in the hormonal course of aging.

Metabolic health is a major influence. People with insulin resistance, metabolic syndrome or type 2 diabetes tend to have lower DHEA-S for their age. The relationship runs in both directions: low DHEA-S contributes to metabolic dysfunction, and metabolic dysfunction speeds up the fall in DHEA-S. Breaking this cycle means addressing both processes.

What health associations studies show

Mortality and cardiovascular disease

The link between low DHEA-S and mortality is one of the most often confirmed observations in aging research. Several cohort studies show that people in the bottom third of the DHEA-S distribution have markedly higher all-cause mortality than those in the top third. In one study of postmenopausal women, those with the lowest DHEA-S had a 6-year mortality rate of 17 percent, compared with 8 percent in the highest group. The effect persists after adjusting for age, which suggests that DHEA-S captures aspects of biological aging beyond chronological age.

Cardiovascular disease shows a similar pattern. Lower DHEA-S points to a higher risk of cardiovascular death, progression of heart failure and adverse events in patients with existing heart disease. The mechanism probably involves several pathways: inflammation, endothelial dysfunction, insulin resistance and altered lipid metabolism. DHEA-S appears to have cardioprotective effects, and as levels fall, cardiovascular risk rises.

Frailty and physical function

Frailty is strongly associated with low DHEA-S. Frailty is a clinical syndrome marked by weakness, slow walking speed, low physical activity, exhaustion and unintended weight loss. It is not the same as disability, but it can come before it. Studies show that older adults with low DHEA-S are markedly more likely to develop frailty, particularly a form involving limited mobility. The connection runs through muscle mass, mitochondrial function and inflammatory activity, all of which are influenced by DHEA-S.

Cognitive decline and bone health

There are also links to declining mental abilities, but they are weaker. Some studies associate low DHEA-S with a higher risk of dementia and faster cognitive decline, while others find no association. The inconsistency may come from differences in study populations, length of follow-up or the specific cognitive domains assessed. DHEA-S does cross the blood-brain barrier and has neuroprotective properties in animal models, but translating these properties into cognitive outcomes in humans has proved difficult.

Bone health is another area with mixed findings. Some studies show that low DHEA-S predicts lower bone mineral density and higher fracture risk, especially in women. Others find no association. The variation probably reflects the complex interplay between DHEA-S, sex hormones and bone metabolism. DHEA-S is converted into estrogen and testosterone in bone tissue, and these local conversions matter more than circulating DHEA-S levels alone.

What studies on taking DHEA show

There are many studies on taking DHEA, with inconsistent results. It is well established that supplements raise DHEA-S levels in the blood. Whether that leads to meaningful health benefits is less clear.

For bone density, the evidence is mildly positive in older women with low baseline DHEA-S. A systematic review found moderate improvements in bone mineral density with a daily supplement of 50 mg, but the effect was small and was not seen in men. For muscle strength and physical function, results are mixed. Some studies show improvements in muscle mass and grip strength, especially in older adults with very low starting levels. Others show no benefit.

When it comes to cardiovascular risk factors, the data do not support routine supplementation:

• Studies have not shown consistent improvements in lipid profiles, blood pressure or inflammatory markers.

• A meta-analysis found that DHEA supplementation had no significant effect on cardiovascular outcomes compared with placebo.

For cognitive function, the evidence is weak. Several studies in middle-aged and older adults found no benefit of DHEA supplementation for memory, executive function or mood. The one exception is a subgroup of people with depression and low baseline DHEA-S, in whom some studies show a moderate improvement in mood.

Dose matters. Most studies use 25 to 50 mg a day. Higher doses raise testosterone and estradiol levels more, which in women can cause side effects such as acne, hair growth and voice changes. Lower doses may not raise DHEA-S enough to produce measurable effects. The therapeutic window is narrow, and individual responses vary widely.

The quality of the evidence is limited by short study durations. Most studies last 6 to 12 months. Whether long-term supplementation over years or decades changes the course of aging is unknown. The longest studies show that benefits (where there are any) plateau after the first few months. This suggests that simply raising DHEA-S levels does not reverse the underlying aging processes that caused the decline in the first place.

What repeated DHEA-S measurements can tell you

A single measurement places DHEA-S within the age-specific reference range. Repeated measurements also show how fast the level is falling. Because DHEA-S declines predictably with age, the rate of decline says more than any single value. A faster-than-typical decline for your age is read as a sign of faster biological aging; stable or slowly falling levels as a sign of slower aging.

Testing DHEA-S is straightforward:

• It takes a single blood draw, and levels stay stable throughout the day, so timing does not matter.

• Unlike cortisol or testosterone, no particular morning time is required.

• That makes consistent tracking easier.

Interpreting results takes context. Reference ranges are wide and broken down by age. For adults aged 30 to 39, typical ranges run from 40 to 325 µg/dl. At 50 to 59, they fall to 15 to 170 µg/dl. A value in the lower half of the age-specific range is read as a sign of faster adrenal aging. By the same logic, a value in the upper half points to better-preserved adrenal function.

DHEA-S should be interpreted together with other markers of metabolic and hormonal health. Low DHEA-S combined with high fasting insulin, elevated hsCRP and unfavorable blood lipids paints a picture of accelerated biological aging. Low DHEA-S alongside otherwise favorable metabolic markers is less concerning and may simply reflect genetic variation.

Measurements taken over several years can offer clues about how interventions are working. Less chronic stress, better sleep and a healthier body composition should show up as steadier or slightly rising DHEA-S levels. If levels still keep dropping quickly, that points to other contributing factors worth investigating.

How DHEA-S can add to the assessment of aging

DHEA-S offers clues about adrenal aging, hormonal balance, inflammatory activity and metabolism. Together with ApoB, HbA1c, fasting insulin and ferritin, it builds a broader picture of biological change. The aim of repeated measurements is to help tell stable trends apart from accelerated change and to decide on next steps from there.

Frequently asked questions

What is DHEA-S and what does it do in the body?

DHEA-S, or dehydroepiandrosterone sulfate, is the most abundant steroid hormone in the bloodstream. It is made in the adrenal glands and serves as a precursor that tissues convert locally into testosterone, estradiol and other active hormones. Because levels stay stable throughout the day regardless of stress or meals, a single blood draw accurately reflects the baseline production capacity of the adrenal glands without daily fluctuations.

How fast does DHEA-S decline with age?

DHEA-S peaks in the mid-20s and then falls by about 2% a year. By age 40, typical levels are well below their peak, and by 70 to 80, most people keep only 10 to 20% of their youthful levels. This linear decline is one of the most consistent age-related hormonal changes, seen across all human populations, and is driven mainly by the thinning of the adrenal zona reticularis.

Why do some people have lower DHEA-S than others of the same age?

Twin studies suggest that the heritability of DHEA-S is about 50 to 60%, so genetics plays a large part. Cumulative stress exposure, or allostatic load, predicts the decline better than any single stressor, which means that years of chronic stress, poor sleep or early-life adversity speed up adrenal aging. Visceral fat buildup, insulin resistance, menopause in women and deficiencies in zinc, magnesium and B vitamins suppress DHEA-S regardless of chronological age.

What health problems are linked to low DHEA-S?

Low DHEA-S is associated with higher all-cause mortality. One cohort study in postmenopausal women found a 6-year mortality rate of 17% among women with the lowest levels, versus 8% in the highest group. Low levels also point to frailty, progression of cardiovascular disease and muscle loss. Evidence for links to cognitive decline and bone density exists but is less consistent, probably because of differences in local hormone conversion rather than circulating DHEA-S alone.

Does DHEA supplementation actually work against aging?

DHEA supplements reliably raise DHEA-S levels in the bloodstream, but whether this brings health benefits is less clear. A systematic review found a slight improvement in bone mineral density in older women with low baseline levels taking 50 mg a day. Evidence for muscle strength, cardiovascular outcomes and cognitive function is weak or negative in most studies. Observed benefits tend to stop growing after a few months, and higher doses can cause side effects in women such as acne and hormonal changes.

How does chronic stress affect DHEA-S levels?

Chronic stress raises cortisol, and under sustained stress the adrenal glands prioritize cortisol synthesis, which reduces DHEA-S production. People with chronic stress-related conditions often have DHEA-S levels below what would be expected for their age. Poor sleep, which disrupts the secretion of growth hormone that supports adrenal function, amplifies this effect. This is why allostatic load accumulated over years can predict a decline in DHEA-S better than any acute stressor.

How is DHEA-S tested and what do the results mean?

DHEA-S is measured with a simple blood draw and is stable throughout the day, so no test at a specific time is needed. Reference ranges are broken down by age: adults aged 30 to 39 typically fall between 40 and 325 µg/dl, while those aged 50 to 59 fall between 15 and 170 µg/dl. A value in the lower half of the age-specific range is read as a sign of faster adrenal aging. The rate of decline across serial measurements says more than any single result.

How does DHEA-S relate to other markers of aging?

DHEA-S should be interpreted together with other biological markers of aging. Low DHEA-S combined with elevated fasting insulin, high hsCRP and unfavorable lipid markers adds up to a picture of accelerated aging across several systems. DHEA-S interacts with insulin signaling pathways and correlates inversely with inflammatory markers, which means its decline both reflects and amplifies the metabolic and inflammatory changes that drive biological aging in general.

Sources and references

(2024). Compromised biogenesis of DHEA-S is implicated in primate adrenal aging. Nature aging, 4(3), 291-292. https://doi.org/10.1038/s43587-024-00601-7 Publication

National Center for Biotechnology Information. (2023). Adrenal Androgens and Aging. https://ncbi.nlm.nih.gov/books/NBK279006 Publication

Urbanski HF, Mattison JA, Roth GS, Ingram DK (2013). Dehydroepiandrosterone sulfate (DHEAS) as an endocrine marker of aging in calorie restriction studies. Experimental gerontology, 48(10), 1136-9. https://doi.org/10.1016/j.exger.2013.01.001 Publication

Harvard Health Publishing. (2025). DHEA supplements: Are they safe? Or effective? - Harvard Health. https://health.harvard.edu/staying-healthy/dhea-supplements-are-they-safe-or-effective Publication

Cleveland Clinic. (n.d.). DHEAS Test: What It Is, Procedure, Results. https://my.clevelandclinic.org/health/diagnostics/22148-dheas-test-dhea-sulfate-test Publication