New 7-Keto© Lean No. 15163 Clinically proven to burn fat and promote weight loss* 7-Keto© has been proven a remarkably effective weight-loss aid in a randomized, double-blind, placebo-controlled clinical trial conducted by Carlon M. Colker, M.D., Department of Medicine at Greenwich Hospital, Greenwich, Conn. Study participants who combined 7-Keto© with a healthy diet and exercise, lost an average of one pound per week while the placebo group lost less than one-fourth of a pound per week. Weight-loss was due to a loss of body fat not water weight or muscle tissue. Results of the study are attributed to raised levels of thyroid hormone T3, which increases basic metabolic rate. 7-Keto© Lean combines clinically proven 7-Keto©, the improved, safe form of DHEA, with seven other powerful natural compounds to support thyroid function and metabolism.