7-Keto DHEA 100mg 30 tabs by Source Naturals7 Keto DHEA 100mg 30 tabs Dietary Supplement DHEA, the most abundant steroid in the blood of adult humans, peaks in early adulthood and declines with age. Animal research indicates that 7 Keto??, a natural metabolite of DHEA, is a more active inducer of thermogenic enzymes than DHEA. Research on humans has shown that supplementation with 7 Keto?? is well tolerated. It is not converted to estrogens or androgens, a point of concern for many people.