Steroid HormoneHormone Precursor

DHEA

The mother of hormones. DHEA (dehydroepiandrosterone) is your most abundant steroid hormone, serving as the raw material for testosterone, estrogen, and other sex hormones. It peaks in your 20s and declines steadily—a key marker of biological aging.

DHEA synthesis and conversion pathways
Peak 25
Years Old
-2%/yr
Decline After Peak
80%↓
By Age 75
DHEA-S
Sulfated Form (Blood)

What DHEA Does

Hormone Precursor

Converts to testosterone, estrogen, and other androgens in tissues that need them.

Neurosteroid

Affects brain function, mood, memory. Has its own receptors in brain tissue.

Immune Modulation

Enhances immune function and counters immunosuppressive effects of cortisol.

Bone Health

Supports bone density through conversion to estrogens and androgens.

Body Composition

Influences muscle mass and fat distribution. Low levels linked to visceral fat.

Skin Health

Converted to androgens in skin. Supports sebum production and skin thickness.

The Steroid Cascade

Cholesterol
starting point
Pregnenolone
master precursor
DHEA
most abundant
Androstenedione
intermediate
Testosterone/Estrogen
end hormones

DHEA/Cortisol Ratio

The balance between DHEA and cortisol is a key indicator of stress adaptation and aging:

Healthy Ratio

Higher DHEA relative to cortisol indicates youth, resilience, and anabolic state.

Shifted Ratio

Low DHEA with high cortisol = chronic stress, accelerated aging, catabolism.

Pregnenolone Steal

Under chronic stress, pregnenolone shunts to cortisol pathway, starving DHEA production.

Adrenal Fatigue Pattern

Eventually both drop as adrenals exhaust. Low DHEA-S is a common finding.

Testing & Supplementation

DHEA-S Test

Blood test measures sulfated form. Stable throughout day. Compare to age-appropriate ranges.

Typical Doses

Women: 5-25mg/day. Men: 25-50mg/day. Start low and retest after 6-8 weeks.

7-Keto DHEA

Metabolite that doesn't convert to sex hormones. Used for metabolism without hormonal effects.

Cautions

Avoid with hormone-sensitive conditions. Can cause acne, hair loss in women. Monitor levels.

DHEA Discussion