7-Keto DHEA is a biologically active metabolite of DHEA that promotes better Iron Slim Keto health and energy without the potential side effects of increased amounts of hormones. 7-Keto DHEA boosts the immune system by increasing the production of certain types of white blood cells; it increases energy and metabolism by activating enzymes in the liver that boost the rate of thermogensis (the process by which fat is burned).