Some people shy away, often rightfully so, from products containing the DHEA hormone. Despite its numerous benefits in terms of losing fat and building muscle, it can have some nasty side effects that many people prefer to keto x factor reviews avoid. A byproduct of DHEA, called 7-Keto DHEA (3-acetyl 7-keto dehydroepiandrosterone) is a supplement that can deliver some impressive fat burning enhancement without the androgenic side effects of DHEA. 7-Keto does not stimulate the central nervous system; rather, it works by stimulating the thyroid to enhance metabolism.