7-Keto-DHEA is a metabolite of DHEA that has no androgenic effects, meaning it will not build muscle via the androgen receptor. This being said, it does reduce cortisol, which is good for anti-catabolism and can increase fat burning through thermogenesis. 7-Hydroxy-DHEA is simply a metabolite of 7-Keto-DHEA that is the active form. The two are generally regarded as doing the same things in the body.
7-Keto-DHEA has also shown to promote the immune response when taken orally, giving it many uses for older people looking to keep healthy. Overall, although not a bodybuilding supplement, 7-Keto-DHEA has many benefits, first being increased fat loss and reduced cortisol and secondarily increased immunity. It is certainly well studied, safe and effective for increasing fat loss.
It’s effects won’t be immediate, but as part of a long term weight management strategy, it is a very good supplement.