DHEA (dehydroepiandrosterone) is produced primarily by the adrenal glands and serves as the body's master precursor hormone. It converts into both androgens and estrogens depending on tissue-specific enzyme activity. DHEA levels peak in your mid-20s and decline approximately 2-3% per year thereafter.
Quick answer
What DHEA does: Serves as a precursor to testosterone, estrogen, and other steroid hormones. Also has direct effects on immune function, bone density, mood, and cognitive health.
Who benefits: Individuals over 40 with confirmed low DHEA-S levels, those with HPA axis dysregulation, and women with adrenal insufficiency.
Dose: 10-25 mg for women, 25-50 mg for men. Always test DHEA-S levels before and during supplementation.
The DHEA cascade
DHEA sits at a critical branch point in steroid hormone synthesis:
DHEA converts to:
- Androstenedione → Testosterone → DHT
- Androstenedione → Estrone → Estradiol
- Androstenediol (immune-modulating)
- 7-keto DHEA (metabolic effects without sex hormone conversion)
This branching is important: DHEA supplementation can raise both androgens and estrogens. The direction of conversion depends on sex, age, tissue type, and individual enzyme activity. This is why blind supplementation without testing is risky.
Evidence-based benefits
Confirmed benefits
- Adrenal insufficiency: DHEA supplementation in women with primary or secondary adrenal insufficiency improves well-being, mood, and sexual function (New England Journal of Medicine)
- Bone density: 50 mg DHEA improved bone mineral density in older adults, particularly at the hip
- Mood and well-being: Meta-analysis shows significant improvement in depressive symptoms, particularly in older adults with low baseline DHEA
- Vaginal atrophy: Intravaginal DHEA (Intrarosa/prasterone) is FDA-approved for postmenopausal vaginal atrophy
Probable benefits
- Immune function: DHEA modulates immune response — enhances anti-viral defenses, reduces autoimmune overactivation
- Insulin sensitivity: Some evidence for improved glucose metabolism in older adults
- Cognitive function: Observational data links higher DHEA-S levels with better cognitive performance in aging
Overhyped claims
- Anti-aging miracle — DHEA declines with age, but supplementation doesn't reverse aging
- Athletic performance — DHEA has minimal effect on body composition or performance in young, healthy adults
- Testosterone booster in young men — unnecessary and potentially counterproductive if DHEA levels are already normal
Dosage by population
Women (over 40 or with low DHEA-S)
- Starting dose: 10 mg daily
- Typical maintenance: 10-25 mg daily
- Maximum: 25 mg daily (higher doses risk androgenic side effects)
- Timing: Morning with food (mimics natural diurnal pattern)
Men (over 40 or with low DHEA-S)
- Starting dose: 25 mg daily
- Typical maintenance: 25-50 mg daily
- Maximum: 50 mg daily
- Timing: Morning with food
HPA axis recovery
- 10-25 mg daily to restore DHEA:cortisol ratio
- Particularly useful in Stage 3 HPA dysregulation (depleted)
- Monitor both DHEA-S and cortisol levels
Testing and monitoring
Before supplementing, test:
- DHEA-S (sulfated form — more stable marker than free DHEA)
- Testosterone (total and free)
- Estradiol
- PSA (men over 40)
During supplementation, retest at:
- 6 weeks — initial response
- 3 months — steady state
- Every 6 months thereafter
Target DHEA-S levels:
- Women: 150-350 mcg/dL (age-dependent)
- Men: 200-500 mcg/dL (age-dependent)
- Goal is mid-range for your age, not maximum
Safety considerations
- Androgenic side effects (women): Acne, oily skin, facial hair, deepened voice at excessive doses
- Estrogenic effects (men): Gynecomastia possible at high doses due to aromatization
- Hormone-sensitive cancers: Contraindicated in breast, prostate, ovarian, or uterine cancer due to sex hormone conversion
- Liver: DHEA is metabolized by the liver; avoid in active liver disease
- Drug interactions: May affect insulin, corticosteroids, and hormone therapy
- Not for young adults: Supplementing when DHEA levels are already normal can disrupt the HPG axis
7-Keto DHEA alternative
7-Keto DHEA is a metabolite that provides some benefits without converting to sex hormones:
- Supports metabolic rate and thyroid function
- Does not raise testosterone or estrogen
- 100-200 mg daily is the typical dose
- Better option for those concerned about hormonal side effects
FAQ
Q: Can DHEA help with weight loss? A: DHEA has modest effects on body composition in older adults with low levels, primarily through improved insulin sensitivity and metabolic rate. It's not a weight loss supplement for young, healthy individuals.
Q: Is DHEA legal and available over the counter? A: In the United States, DHEA is available as an OTC supplement. In many other countries (UK, Canada, Australia), it requires a prescription. It is banned by WADA for competitive athletes.
Q: How does DHEA relate to cortisol? A: DHEA and cortisol are both made from pregnenolone. Under chronic stress, the body preferentially produces cortisol over DHEA ("pregnenolone steal"), leading to a high cortisol:DHEA ratio. Supplementing DHEA helps restore this balance.
Related Articles
- Pregnenolone Supplement Guide
- HPA Axis Dysregulation Supplements
- Cortisol Management Supplements
- DIM and Estrogen Metabolism
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