Yes, DHEA does increase estrogen levels in males. When men take DHEA supplements, their bodies convert a significant portion of it into estrogens rather than testosterone. A study of elderly men found that both 50 mg and 100 mg doses of oral DHEA raised estradiol and estrone levels in a dose-dependent manner, while testosterone and its potent derivative dihydrotestosterone remained unchanged.
How DHEA Becomes Estrogen
DHEA is a precursor hormone, meaning it doesn’t do much on its own. Instead, your body uses enzymes to convert it into other hormones, including both androgens and estrogens. The first step involves an enzyme called 3-beta-HSD, which transforms DHEA into androstenedione, a weak androgen. From there, androstenedione sits at a metabolic crossroads: it can become testosterone, or it can be converted into estrone (a form of estrogen) by an enzyme called aromatase.
This conversion doesn’t just happen in one place. DHEA can be transformed into estrogens locally within specific tissues, including the brain and fat tissue, wherever the necessary enzymes are present. In men, fat tissue is a particularly active site for aromatase activity, which is one reason why men with higher body fat tend to convert more DHEA and testosterone into estrogen.
What the Research Shows
The clearest evidence comes from a crossover study that gave elderly men either a placebo, 50 mg of DHEA, or 100 mg of DHEA and tracked their hormone levels over 12 hours. The results were striking in their lopsidedness. Testosterone and dihydrotestosterone didn’t budge after either dose. Estrogens, on the other hand, rose significantly.
Estrone levels nearly doubled on the 50 mg dose compared to placebo, and more than doubled on the 100 mg dose. Estradiol (the more biologically active form of estrogen) also increased at both doses, though less dramatically. The increases were dose-dependent, meaning the higher the DHEA dose, the greater the estrogen rise. Importantly, estrogen levels stayed within the normal range for men at both doses, but the shift was real and measurable.
The researchers concluded that 50 mg appeared to be an appropriate replacement dose for elderly men whose natural DHEA levels had declined with age, and that the resulting estrogen increase could actually contribute to some of the beneficial effects associated with DHEA, such as improved bone density and cardiovascular markers. But this also means that men taking DHEA specifically hoping to boost testosterone are likely to be disappointed. The hormonal shift favors estrogen production, not androgen production.
Why Testosterone Doesn’t Rise
This is the part that surprises most men. DHEA sits upstream of both testosterone and estrogen in the hormonal pathway, so it seems logical that supplementing it would raise both. In practice, the male body already produces the vast majority of its testosterone directly in the testes, regulated by signals from the brain. Adding DHEA to the mix doesn’t meaningfully increase that testicular production. The DHEA that enters the bloodstream from a supplement gets processed primarily in peripheral tissues like fat and skin, where aromatase tends to steer it toward estrogen.
Age plays a role here too. Aromatase activity increases as men get older and as body fat accumulates. So older men, who are also the group most likely to take DHEA supplements to counteract age-related hormonal decline, are precisely the group most likely to convert that DHEA into estrogen rather than testosterone.
What This Means If You’re Taking DHEA
If you’re a man using DHEA supplements, your estrogen levels are very likely rising to some degree. Whether that matters depends on your starting hormone levels, the dose you’re taking, and your body composition. At typical supplement doses of 25 to 50 mg per day, the estrogen increase generally stays within the normal male range. At higher doses, or in men with significant body fat, the increase could push estrogen levels toward the upper end of normal or beyond.
Signs that estrogen has risen too high in men can include water retention, breast tissue tenderness or growth (gynecomastia), mood changes, and reduced libido. These effects are more commonly associated with much larger hormonal shifts than DHEA alone typically produces, but they’re worth being aware of, especially if you’re stacking DHEA with other supplements or hormone therapies.
If you’re using DHEA, periodic blood work that includes both estradiol and DHEA-S levels gives you a clear picture of what’s happening. A DHEA-S test measures how much DHEA your body has in circulation, while an estradiol test reveals whether the conversion to estrogen is significant in your case. These are standard lab tests that any provider can order.
DHEA as an Anti-Aging Supplement
DHEA is widely marketed as an anti-aging hormone, largely because natural DHEA levels peak in your mid-20s and decline steadily after that. By age 70 or 80, levels may be only 10 to 20 percent of what they were at their peak. The logic of replacing what declines sounds appealing, but the National Institutes of Health notes there is no reliable evidence supporting the anti-aging claims made for DHEA supplements, and that these supplements can cause serious side effects.
For men specifically hoping to raise testosterone, DHEA is a poor tool. The research consistently shows it raises estrogen without meaningfully affecting testosterone. Men concerned about low testosterone are better served by having their levels tested directly and discussing targeted options with a provider, rather than relying on an upstream precursor hormone that the body preferentially converts in a different direction.