Hormonal Health
DHEA and Pregnenolone: What They Are and Who Needs Them
Haute MD Editorial Team
DHEA (dehydroepiandrosterone) and pregnenolone are steroid precursor hormones produced primarily by the adrenal glands. They serve as upstream building blocks for sex hormones (testosterone, estrogen) and other steroids. Both decline significantly with age — DHEA peaks in the mid-20s and declines approximately 2-3% per year thereafter, falling to roughly 20-30% of peak levels by age 70. This age-related decline has led to significant interest in supplementation, though the evidence for specific clinical benefits varies considerably by outcome and population.
What DHEA does and who may benefit from supplementation
DHEA converts to androgens and estrogens in peripheral tissues — making its effects dependent on individual conversion patterns. Clinical evidence supports DHEA supplementation for — adrenal insufficiency (where DHEA production is markedly impaired and supplementation is standard of care); PCOS-related adrenal androgen excess does not benefit from DHEA (counterproductive). For aging women — DHEA 10-25mg daily improves libido, bone density, and mood in some postmenopausal women, particularly those with low adrenal function. Vaginal DHEA (prasterone/Intrarosa) is FDA-approved for vaginal dryness in postmenopausal women. For aging men — evidence is more mixed; men who convert DHEA primarily to estrogen rather than testosterone may not experience anticipated benefits.
Pregnenolone — the mother hormone
Pregnenolone sits further upstream than DHEA in the steroid hormone cascade — it can convert to progesterone, DHEA, cortisol, aldosterone, or sex hormones depending on enzymatic pathways. It is often marketed as a "master hormone" or "nootropic" for memory and cognitive function. Evidence — some small studies suggest pregnenolone may support memory and cognitive function, particularly in older adults. However, the evidence base is much weaker than for DHEA, and the downstream conversion pathway is unpredictable — supplementing pregnenolone does not reliably increase any specific downstream hormone. Typical doses studied are 50-100mg daily.
Important considerations before supplementing
DHEA and pregnenolone are available OTC as supplements in the United States (unlike most countries where they require prescription). This means quality and dosing are not regulated. Test DHEA-S (the sulfated, stable form of DHEA measured in blood) before supplementing — supplementing DHEA in someone with already-normal levels may not produce benefit and could cause androgenic side effects in women (acne, hair loss, increased facial hair). Women are more sensitive to androgenic side effects than men and typically use lower doses (5-25mg for DHEA vs. 25-100mg in men). Discuss with a physician experienced in hormone optimization before starting.
Frequently Asked Questions
Should I take DHEA?
DHEA supplementation is most clearly beneficial in individuals with documented low DHEA-S levels (test before supplementing), women with hypoactive sexual desire disorder or adrenal insufficiency, and postmenopausal women with genitourinary symptoms (vaginal DHEA/prasterone). It is not a universal anti-aging supplement — benefits are most evident in those who are actually deficient. Test, then decide.
What is the right DHEA dose?
Women typically use 5-25mg daily — starting at the low end to minimize androgenic side effects. Men typically use 25-100mg daily. Dose should be titrated based on follow-up DHEA-S testing at 6-8 weeks. Taking DHEA in the morning (with food) mimics the natural morning adrenal cortisol/DHEA pattern.
Are DHEA supplements safe?
DHEA is generally considered safe at physiological replacement doses (those that restore levels to the normal range for young adults), particularly in individuals who are deficient. In women at higher doses, androgenic side effects (acne, oily skin, hair loss, increased facial hair) can occur. DHEA should be used cautiously in people with hormone-sensitive conditions (breast cancer, prostate cancer). There are no long-term safety data beyond several years of supplementation.
Who should not take DHEA?
DHEA is not appropriate for people with hormone-sensitive cancers (estrogen-receptor-positive breast cancer, prostate cancer), women with PCOS (may worsen androgen excess), pregnant or breastfeeding women, or children and adolescents. People with any hormone-sensitive condition should consult a physician before supplementing.
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