DHEA may lower circulating cortisol modestly in some people, but it is not a proven or reliable treatment for chronically high cortisol, Cushing syndrome or "adrenal fatigue."
A 2021 systematic review and meta-analysis of randomized clinical trials found that DHEA supplementation reduced serum cortisol by an average of 53.6 nmol/L, or about 1.9 micrograms per deciliter. The studies differed in dose, treatment length and participant health, so this result does not show that DHEA will lower cortisol for everyone or relieve stress-related symptoms.
DHEA and Cortisol: The Evidence at a Glance
| Question | Evidence-based answer |
|---|---|
| Can DHEA lower cortisol? | Some randomized trials found a modest average reduction. |
| Does DHEA reliably normalize high cortisol? | No. The evidence is limited, and DHEA is not a standard treatment for high cortisol. |
| Does a low DHEA level prove cortisol is high? | No. DHEA sulfate and cortisol are separate hormones that require separate evaluation. |
| Should you take DHEA for stress? | Not without medical guidance. DHEA affects sex hormones and can cause side effects and medication interactions. |
| Is DHEA appropriate for Cushing syndrome? | No. Suspected Cushing syndrome requires appropriate endocrine testing and treatment. |
Why Might DHEA Affect Cortisol?
DHEA, or dehydroepiandrosterone, is an adrenal steroid hormone and a precursor to testosterone and estrogen. Cortisol is a separate adrenal hormone involved in metabolism, immune activity and the body's response to stress. Both hormones are influenced by the hypothalamic-pituitary-adrenal axis, but DHEA is not simply a natural cortisol blocker.
Researchers sometimes describe the relationship between cortisol and DHEA using a cortisol-to-DHEA ratio. A higher ratio may reflect an altered stress response in some research settings. It is not, however, a reliable standalone test for chronic stress or a reason to start taking DHEA.
A recent systematic review found that evidence for using the hair cortisol-to-DHEA ratio in clinical practice remains insufficient.
What Did the Clinical Research Find?
The strongest direct evidence comes from a systematic review of randomized trials. Across 10 treatment arms, DHEA supplementation was associated with a statistically significant reduction in serum cortisol of 53.6 nmol/L. The 95% confidence interval indicated a reduction of approximately 18.9 to 88.2 nmol/L compared with placebo.
The result has several limits:
- The studies measured changes in blood cortisol. They did not necessarily show improvements in sleep, anxiety, weight or long-term health.
- The trials included different populations and DHEA regimens.
- The review covered research published through December 2020. It does not establish the effectiveness of every DHEA product currently sold.
- A statistically lower cortisol result does not prove that participants had abnormally high cortisol or that lowering cortisol improved their health.
The Endocrine Society does not recommend routine DHEA use for women because evidence for its effectiveness and long-term safety remains limited. In selected women with confirmed primary adrenal insufficiency, the society allows a monitored DHEA trial for persistent low libido, depressive symptoms or low energy after steroid replacement has been optimized.
That is specialist-directed hormone replacement. It is not general treatment for high cortisol.
Can DHEA Lower Cortisol Caused by Stress?
DHEA is not a dependable supplement for stress-related cortisol.
Stress can affect cortisol levels throughout the day, and one cortisol measurement does not establish a disorder. DHEA may change hormone measurements without addressing the reason for the symptoms. Possible causes include poor sleep, anxiety, depression, excessive exercise, medication effects or another medical condition.
If stress is the concern, treatment should address the cause. Depending on the situation, that may involve improving sleep, treating anxiety or depression, reviewing medications, reducing excessive exercise and getting an appropriate medical evaluation.
Is DHEA Safe to Take?
DHEA is hormonally active. The body can convert it into testosterone and estrogen, so it can cause androgenic or estrogenic effects rather than acting like a vitamin. That applies to a common DHEA supplement bought on Amazon as much as to a form a clinician prescribes, because the hormone is the same either way.
Possible concerns include:
- Acne
- Unwanted facial hair
- Mood changes
- Breast enlargement in men
- Changes in cholesterol levels
The long-term safety of systemic DHEA supplementation remains uncertain.
DHEA may be inappropriate without medical supervision if you:
- Have a hormone-sensitive cancer or a history of breast, ovarian, uterine or prostate cancer
- Are pregnant or breastfeeding
- Have liver disease
- Have polycystic ovary syndrome
- Take anticoagulants, tamoxifen, aromatase inhibitors or certain psychiatric medicines
- Have a history of mania or bipolar disorder
DHEA can interact with anticoagulants, some antidepressants, tamoxifen, aromatase inhibitors and triazolam. Supplement quality can also vary because dietary supplements do not undergo the same premarket approval process as prescription medicines. If you are weighing a product up, it is worth reading the ingredient list on a DHEA supplement to see the stated dose per capsule and what else is in it.
What Should You Do If Your Cortisol Is High?
Do not use DHEA to self-treat an abnormal cortisol result. Ask a healthcare professional to interpret the result alongside the testing method, collection time, symptoms, medications and other hormone tests.
MedlinePlus notes that DHEA sulfate results should be considered alongside your symptoms, age, sex, medical history and other blood tests.
Seek medical evaluation for persistent symptoms such as:
- Easy bruising or unexplained muscle weakness
- New or difficult-to-control high blood pressure
- Rapid, unexplained weight gain, especially around the abdomen and face
- Purple stretch marks
- Menstrual changes, erectile problems or increased facial hair
- Severe insomnia, anxiety or mood changes
If cortisol is genuinely elevated, the next step is to identify the cause and treat it appropriately. DHEA is not a substitute for that evaluation.