Is produced in the adrenal glands. It is also produced in the brain, liver, ovaries, testicles, and myelin sheath. 

Other hormones such as DHEA, cortisol, progesterone, testosterone, and estrogens are made from pregnenolone.

Pregnenolone may enhance mood, energy, and memory. This would be helpful for individuals dealing with autoimmune disorders, chronic fatigue, and depression.