7-Keto DHEA- When dehydroepiandrosterone, DHEA, has been introduced, it was lauded as the anti aging miracle drug, the fountain of youth. Once the concern grew that DHEA may promote the growth of not detected tumors, the interest fizzled. The scientists would not give up on the DHEA and have isolated the 7-Keto DHEA component, which is supposed to give all the positive effects, without the negative aspects. 7-Keto DHEA has shown in studies conducted with lab animals that it promotes the immune system, is anti catabolic, improves memory, raises indirectly the metabolism rate, which then burns more calories. In a human safety study no adverse effects were noted. 7-Keto DHEA is a very popular nutritional supplement ingredient with the body building community and is used for weight loss and muscle building.