DHEA-S 80 µg/dL at 40 — adrenal floor or pre-andropause?
Dehydroepiandrosterone sulphate (DHEA-S) at 80 µg/dL in a man in his 40s sits below the age-matched reference range (typically 130–500 µg/dL for males 40–49). DHEA-S is the most abundant steroid hormone in human serum and serves as a precursor to both androgens and oestrogens. It declines naturally and steeply with age — peak DHEA-S in the early 20s is roughly 3× the level at age 60 — but a reading of 80 at 40 is meaningfully below the trajectory of healthy peers and is associated in cohort research with increased fatigue, reduced muscle mass, depressed mood, and metabolic-syndrome features. It's commonly framed as 'adrenal fatigue' in popular media, though the actual physiology is more nuanced.
Reference ranges
| Male 20–29 | 280 – 640 µg/dL |
| Male 30–39 | 120 – 520 µg/dL |
| Male 40–49 | 95 – 530 µg/dL |
| Male 50–59 | 70 – 310 µg/dL |
| Male 60+ | 40 – 290 µg/dL |
What this marker measures
DHEA-S is produced primarily by the adrenal zona reticularis (with a small testicular contribution) and is the sulphated, long-half-life form of DHEA. It serves as a circulating reservoir of androgenic precursor that peripheral tissues convert to testosterone, dihydrotestosterone, and oestradiol via local steroidogenic enzymes. Because DHEA-S has a half-life of ~10–20 hours (vs. ~30 minutes for free DHEA), serum DHEA-S is the standard measurement for adrenal androgen output. It's treated as a global marker of adrenal-axis health and biological age in the longevity research literature.
Why might it be low?
- ·Age-related decline ('adrenopause') — the largest factor
- ·Chronic stress and HPA-axis dysregulation
- ·Glucocorticoid use (suppresses adrenal androgen output)
- ·Adrenal insufficiency (would also show low cortisol; check ACTH)
- ·Pituitary insufficiency (rare)
- ·Severe chronic illness or critical illness
- ·Anorexia / very low body fat
Why might it be elevated?
- ·DHEA supplementation
- ·Adrenal hyperplasia or adenoma (rare; check 17-OH progesterone)
- ·PCOS in women (relevant marker; not applicable here)
- ·Severe stress with overshoot (transient)
Compounds whose research literature has investigated this area
These are research-grade compounds in our catalogue whose published study literature touches the same biology. Listed for research context — not as recommendations for self-administration.
FAQ
Will supplementing DHEA help?+
Mixed research literature. Trials of 25–50 mg/d oral DHEA in adults with low DHEA-S show modest improvements in mood, energy, body composition, and sexual function in some cohorts (particularly post-menopausal women); effects in middle-aged men are smaller and less consistent. DHEA is OTC in the US, prescription in the UK and EU. Bring it up with a clinician — self-supplementation without monitoring is not in the research-context framing this site uses.
Is this "adrenal fatigue"?+
'Adrenal fatigue' is a marketing term, not a recognised endocrine diagnosis. The physiological reality is that prolonged stress + age can suppress DHEA output (HPA-axis dysregulation), but it's a slow and partial effect. A DHEA-S of 80 at 40 is more likely a combination of normal age decline + lifestyle stressors than a discrete pathology.
What else should I check?+
Total and free testosterone, SHBG, cortisol AM/PM rhythm, IGF-1, free T3 / TSH, fasting insulin. DHEA-S sits in a network of related hormones — looking at it alone is misleading.
This page describes biomarker research and reference ranges for self-tracking and research-context discussion only. It is not medical advice, not a diagnosis, and not a substitute for a qualified physician. Take any concerns about your health to a clinician.
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