This abundant human hormone acts as a tiny, ancient messenger for the nervous system.

Nature · Published 3 October 2026 Swipe more like this →

In short: Dehydroepiandrosterone, or DHEA, is one of the most plentiful steroids circulating in the human body. Produced by the adrenal glands, gonads, and brain, it serves as a precursor to sex hormones. Beyond its metabolic role, DHEA functions as a unique steroidal microneurotrophin, potentially acting as an ancient regulator of neural health.

Chemically identified as C19H28O2, DHEA is a complex molecule with a molecular weight of 288.4 g/mol. While it is widely recognized as a metabolic intermediate that the body converts into more potent androgens and estrogens, its biological reach extends much further. It interacts with various nuclear and cell surface receptors, influencing processes ranging from skin oiliness to the development of body hair during adrenarche.

A significant discovery in 2011 revealed that DHEA and its sulfate form, DHEA-S, can bind to and activate neurotrophin receptors like TrkA and p75NTR. Because these molecules are small and steroidal, they have been dubbed steroidal microneurotrophins. Researchers suggest they may be ancestral ligands that evolved early in the history of the nervous system. This high-affinity interaction with neurotrophin receptors provides a potential biological link between declining DHEA levels in aging populations and the onset of neurodegenerative conditions.

Despite its natural presence, DHEA is also available as an over-the-counter supplement. Medical guidance warns that long-term use or high dosages may carry risks, including the potential to lower HDL cholesterol or exacerbate hormone-sensitive cancers such as breast or prostate cancer. Furthermore, because it can increase androgen levels, it may cause side effects like acne, oily skin, or unwanted hair growth in women. It is generally advised that those with heart conditions, mood disorders, or those who are pregnant or breastfeeding avoid supplementation.

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