Risks and benefits of DHEA supplementation - Peter Attia & Derek MPMD

DHEA Supplementation: Cutting Through the Noise

DHEA (dehydroepiandrosterone) is one of the most widely available hormone supplements on the market, sitting on the shelves of every major pharmacy and health food store. You can buy it without a prescription, which gives many people the impression that it is harmless and straightforward. But when two of the more analytically rigorous voices in the health space sit down to discuss it, the conversation gets more nuanced than you might expect. The risks and benefits of DHEA supplementation depend heavily on who is taking it, why they are taking it, and what else is going on in their hormonal space.

DHEA is a steroid hormone produced primarily by the adrenal glands, with smaller amounts coming from the brain and gonads. It is a precursor to both androgens (like testosterone) and estrogens (like estradiol). In practical terms, DHEA is a building block that your body converts into other hormones downstream. This is both its appeal and its primary risk factor. When you supplement with DHEA, you are more than raising DHEA levels. You are potentially altering the levels of every hormone in the downstream pathway.

Production peaks in your mid-twenties and declines steadily from there. By age 70, most people are producing only 10-20% of the DHEA they made at 25. This decline has fueled the narrative that supplementing DHEA could reverse aging effects, and while there is some truth to the idea that restoring depleted levels can have benefits, the reality is more complicated than just taking a pill to turn back the clock.

What the Evidence Actually Supports

The research on DHEA supplementation is mixed, and that is being generous. For some populations, the data is reasonably positive. Post-menopausal women, for example, may see benefits in bone density, vaginal atrophy, and sexual function from DHEA supplementation, particularly intravaginal DHEA (sold as prasterone/Intrarosa). There is also evidence supporting DHEA use in adrenal insufficiency, where the adrenal glands do not produce enough hormones on their own.

For the broader population of aging adults looking for anti-aging benefits, the evidence is less convincing. Large-scale studies have generally failed to show dramatic improvements in body composition, cognitive function, or quality of life with DHEA supplementation in healthy older adults. The results are often modest and sometimes no better than placebo. This does not mean DHEA is useless for everyone, but it does mean that the marketing claims often outpace the science.

One area where the discussion gets interesting is DHEA's role in the immune system. DHEA has immunomodulatory effects, and there is research suggesting it may help counterbalance some of the immunosuppressive effects of cortisol. Since cortisol and DHEA both come from the adrenal glands and tend to move in opposite directions under chronic stress, there is a theoretical basis for DHEA supplementation in people with high cortisol and depleted DHEA (a common pattern in burnout and chronic stress).

The Conversion Problem

The biggest variable with oral DHEA is that you cannot control where it goes once it enters your body. Some people convert it primarily to testosterone. Others convert it primarily to estrogen. The ratio depends on your individual enzyme activity, your existing hormone levels, your sex, your age, and your body composition. This means two people taking the same dose of DHEA can get very different hormonal outcomes.

For men, excessive conversion to estrogen is a common concern. If a man takes DHEA and a significant portion converts to estradiol, he could end up with symptoms of estrogen dominance: water retention, breast tissue sensitivity, mood changes, and reduced libido. This is the opposite of what most men are hoping to achieve when they reach for a DHEA supplement.

For women, the androgenic side is the concern. Too much conversion to testosterone or DHT can lead to acne, hair loss, facial hair growth, and voice changes. These effects are typically dose-dependent and more common at higher doses (50 mg and above), but individual sensitivity varies widely.

Dosing Considerations and Practical Guidance

If you decide DHEA supplementation makes sense for your situation, dosing deserves careful thought. The most commonly available doses are 25 mg and 50 mg, but research and clinical practice suggest that lower doses (5-25 mg for women, 25-50 mg for men) are often more appropriate, particularly as a starting point. Starting low and monitoring bloodwork allows you to see how your body converts the DHEA before committing to a higher dose.

The bloodwork piece is non-negotiable. At minimum, you should check DHEA-S (the sulfated storage form), total and free testosterone, estradiol, and a complete metabolic panel before starting supplementation and again 4-6 weeks after. This tells you not only whether the DHEA is raising your DHEA-S levels but also where the downstream conversion is going. Without this data, you are guessing, and guessing with hormones is how people end up with unintended consequences.

Timing of the dose matters too. DHEA follows a natural diurnal rhythm, with the highest levels in the morning. Taking your DHEA supplement in the morning aligns with this natural pattern. Some practitioners prefer splitting the dose (half in the morning, half in the early afternoon) to provide more stable levels throughout the day, though the clinical significance of this splitting is debatable.

Who Should Avoid DHEA

DHEA is not appropriate for everyone. People with hormone-sensitive cancers (breast, prostate, ovarian) or a strong family history of these cancers should generally avoid DHEA supplementation unless specifically directed by their oncologist or endocrinologist. Because DHEA converts to both estrogens and androgens, it has the potential to fuel hormone-responsive tumors.

Individuals with polycystic ovary syndrome (PCOS) should also exercise caution, as PCOS is already characterized by elevated androgens, and DHEA supplementation could worsen the condition. Similarly, anyone with liver disease should be careful, as oral DHEA undergoes hepatic metabolism and could add stress to an already compromised liver.

Pregnant and breastfeeding women should not take DHEA. The hormonal effects on fetal and infant development are not well studied, and the precautionary principle applies strongly here.

The Bottom Line on DHEA

DHEA occupies an unusual space in the supplement world. It is a genuine steroid hormone available over the counter, which creates a false sense of safety for many users. The fact that you can buy it at a pharmacy does not mean it is risk-free or that it will produce the benefits you are hoping for without monitoring.

For specific populations, including post-menopausal women with documented low DHEA-S, individuals with adrenal insufficiency, and possibly those with high cortisol-to-DHEA ratios, supplementation has reasonable support. For the general population taking it as a catch-all anti-aging supplement, the evidence is thin and the potential for unintended hormonal shifts is real.

The smart approach is to test first, start low, retest, and adjust. Treat DHEA like the hormone it is, not like a vitamin. If your practitioner is recommending DHEA without checking bloodwork before and after, that is a red flag worth paying attention to.

DHEA in the Context of Broader Hormone Optimization

For men on testosterone replacement therapy, DHEA supplementation is sometimes recommended to maintain the adrenal androgen contribution that natural testosterone production would normally provide. When exogenous testosterone suppresses the HPG axis, LH and FSH drop, which can reduce intratesticular testosterone and downstream adrenal androgen production. Some TRT protocols include low-dose DHEA (25 mg) to maintain physiological levels of the adrenal androgen pool.

For women considering hormone replacement therapy during menopause, DHEA can serve as a complementary component alongside estrogen and progesterone. Its role as a substrate for local tissue conversion means it supports hormonal activity in tissues like the brain, bones, and vaginal mucosa where direct estrogen therapy may not fully reach. Some integrative practitioners include DHEA in thorough menopausal hormone protocols specifically for this reason.

The interaction between DHEA and cortisol is clinically relevant in stress-related presentations. Chronic stress tends to deplete DHEA while maintaining or elevating cortisol, creating an unfavorable cortisol-to-DHEA ratio. Supplementing DHEA in this context is about more than raising an isolated lab value; it is about restoring the balance between a catabolic, immunosuppressive hormone (cortisol) and an anabolic, immunosupportive one (DHEA). The ratio between the two may be more predictive of health outcomes than either level alone.

Finally, DHEA should always be viewed as part of a larger picture. Taking DHEA while ignoring sleep, nutrition, exercise, and stress management is addressing one piece of a much larger puzzle. The people who get the most benefit from DHEA supplementation are typically those who have already optimized the foundational lifestyle factors and are adding DHEA as a targeted intervention based on confirmed low levels. Used this way, it fills a specific gap. Used without context, it is a shot in the dark that may or may not hit the target.

The broader lesson from this discussion is that DHEA occupies a space between mainstream medicine and alternative health where rigorous evidence and clinical experience sometimes point in different directions. The practitioners who use DHEA most effectively are those who combine the available research with careful individualized monitoring, treating each patient as a unique case rather than applying a standardized protocol. This personalized, data-driven approach represents the best of what integrative medicine can offer when applied to a supplement that is both genuinely bioactive and commonly misused.