DHEA is called a pre-cursor hormone because the body makes it into estrogen and testosterone. It has a positive effect on health by decreasing cholesterol and fatty deposits, preventing blood clots, increasing bone growth, promoting weight loss, increasing the sense of well-being, improving brain function, managing stress, and supporting the immune system. DHEA also helps repair and maintain healthy tissue. DHEA can be found in the health food stores since it does not require a prescription.