DHEA

DHEA

Hormones

What is DHEA?

Dehydroepiandrosterone (DHEA) is the most abundant steroid hormone in the human body, produced primarily by the zona reticularis of the adrenal cortex with small amounts from the gonads and brain. DHEA serves as a precursor hormone that is converted into more potent androgens (testosterone, dihydrotestosterone) and estrogens in peripheral tissues. Unlike most hormones, DHEA follows a distinctive age-related pattern: levels rise dramatically during adrenarche (ages 6–8), peak in the mid-20s, and then decline steadily at approximately 2–5% per year, so that by age 70–80 levels are only 10–20% of their youthful peak.

DHEA circulates primarily in its sulfated form (DHEA-S), which has a much longer half-life and more stable blood levels. While unconjugated DHEA fluctuates throughout the day with diurnal variation and pulsatile ACTH secretion, DHEA-S remains relatively constant, making it the preferred clinical measurement. DHEA has been investigated for roles in immune function, neuroprotection, bone density, cardiovascular health, and anti-aging, though many of these potential benefits remain under active research.

Why It Matters

DHEA is an adrenal androgen precursor, but unconjugated DHEA fluctuates during the day and is less stable than DHEA-S. Clinically, DHEA-S is usually the preferred marker when evaluating adrenal androgen excess or deficiency. When DHEA itself is measured, interpretation must be age-specific and should be correlated with DHEA-S, testosterone, cortisol, and 17-hydroxyprogesterone.

Normal Reference Ranges

GroupRangeUnit
Adults (19–30 years)<13ng/mL
Adults (31–40 years)<10ng/mL
Adults (41–50 years)<8.0ng/mL
Adults (51–60 years)<6.0ng/mL
Adults (≥61 years)<5.0ng/mL

Reference ranges may vary by laboratory. Always compare results to the ranges provided by your testing facility.

What High DHEA Levels Mean

Common Causes

  • Congenital adrenal hyperplasia (21-hydroxylase deficiency)
  • Adrenal tumors (adenoma or carcinoma)
  • Polycystic ovary syndrome (PCOS)
  • Cushing's disease (ACTH-dependent)
  • Exogenous DHEA supplementation
  • Premature adrenarche in children

Possible Symptoms

  • Acne and oily skin
  • Hirsutism (excess body and facial hair in women)
  • Male-pattern hair loss in women
  • Menstrual irregularity
  • Deepening of voice (in severe cases)
  • Increased muscle mass
  • Irritability and mood changes

What to do: Elevated unconjugated DHEA should generally be confirmed with DHEA-S, which is the more stable adrenal androgen marker. Additional testing includes testosterone, androstenedione, 17-hydroxyprogesterone (to screen for congenital adrenal hyperplasia), cortisol, and ACTH. Markedly elevated DHEA-S levels raise concern for an adrenal tumor and warrant adrenal imaging with CT or MRI. PCOS is managed with oral contraceptives, spironolactone, or metformin depending on symptoms and reproductive goals. If taking DHEA supplements, discontinuation is the first step.

What Low DHEA Levels Mean

Common Causes

  • Normal aging (physiological decline)
  • Primary adrenal insufficiency (Addison's disease)
  • Chronic glucocorticoid therapy (prednisone)
  • Hypopituitarism (secondary adrenal insufficiency)
  • Chronic illness or severe stress
  • Anorexia nervosa

Possible Symptoms

  • Fatigue and low energy
  • Decreased libido
  • Reduced muscle mass and strength
  • Dry skin and hair
  • Depression and low mood
  • Decreased sense of well-being
  • Reduced bone density over time

What to do: Low DHEA in the context of aging is physiological and does not necessarily require treatment. However, if adrenal insufficiency is suspected (low DHEA-S with fatigue, weight loss, and low cortisol), an ACTH stimulation test should be performed. In women with confirmed adrenal insufficiency, DHEA supplementation (25–50 mg daily) may improve well-being, libido, and mood—this is supported by some clinical data. Routine DHEA supplementation for age-related decline is not currently recommended by major endocrine societies due to limited long-term safety data.

When Is DHEA Testing Recommended?

  • When evaluating signs of androgen excess in women (hirsutism, acne, hair loss)
  • When adrenal insufficiency or adrenal tumor is suspected
  • When investigating premature adrenarche in children
  • When assessing adrenal function in the context of fatigue and low libido

Frequently Asked Questions

DHEA (dehydroepiandrosterone) and DHEA-S (dehydroepiandrosterone sulfate) are the same molecule in different forms—DHEA-S has a sulfate group attached. DHEA is the active form but has a short half-life (15–30 minutes) and fluctuates throughout the day with ACTH pulses. DHEA-S is the sulfated storage form with a much longer half-life (7–10 hours), resulting in stable blood levels that do not vary significantly during the day. Because of this stability, DHEA-S is the preferred clinical measurement and does not require morning or fasting blood draws. The two forms interconvert freely in the blood via sulfatase and sulfotransferase enzymes.
DHEA is available over-the-counter as a dietary supplement, but routine supplementation is not recommended by major medical organizations. While DHEA levels naturally decline with age, this does not necessarily mean replacement is beneficial. Some evidence supports DHEA supplementation in women with adrenal insufficiency (improving mood, libido, and well-being) and potentially in older women with low bone density. However, DHEA is converted to sex hormones, and supplementation can cause acne, oily skin, hair loss, and in women, hirsutism. Long-term safety regarding hormone-sensitive cancers (breast, prostate) is not established. Always consult a physician before starting DHEA, and monitor levels if supplementing.
DHEA-S is commonly measured in the workup of PCOS to help determine the source of androgen excess. In PCOS, DHEA-S is mildly to moderately elevated in about 20–30% of patients, reflecting adrenal androgen overproduction that contributes to the hyperandrogenic phenotype. However, PCOS is primarily an ovarian disorder, and testosterone is usually the dominant elevated androgen. A significantly elevated DHEA-S (>700 µg/dL) should raise suspicion for an adrenal tumor rather than PCOS. The combination of DHEA-S, total and free testosterone, and 17-hydroxyprogesterone helps clinicians distinguish PCOS from congenital adrenal hyperplasia and adrenal neoplasms.

Related Biomarkers

DHEA-SDHEA-SulfateTTestosteroneCortisolCortisolE2Estradiol

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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Reference ranges may vary between laboratories. Always consult your healthcare provider for interpretation of your specific test results.

Disclaimer: SymptomGPT is not a medical diagnosis tool and does not provide medical advice. Always consult a qualified healthcare professional. If you are experiencing a medical emergency, call 911 immediately.