Etiocholanolone is a naturally occurring steroid hormone in the human body. It's classified as an androgen, which means it is a type of male sex hormone, though it is present in both males and females, albeit in smaller quantities compared to other androgens like testosterone. Etiocholanolone is derived from the hormone dehydroepiandrosterone (DHEA) and is primarily produced in the adrenal glands and the testes in males, as well as in the ovaries in females.

In terms of its physiological effects, etiocholanolone is considered relatively weak as an androgen, meaning it doesn't exert significant masculinizing or feminizing effects on the body. The precise functions of etiocholanolone are not fully understood, but it is believed to play a role in influencing mood and behavior, similar to other androgens. However, its specific effects and mechanisms are still a subject of ongoing research. Some research suggests that etiocholanolone may have pheromone-like properties, potentially affecting social interactions and attraction between individuals.