Studies in mice have indicated that diet-induced obesity mice in an isoleucine treatment (final concentration of 2.5% isoleucine in drinking water) had almost 6% lower body weight gain and 49% less epididymal white adipose tissue mass compared with the control treatment, with higher levels of hepatic protein CD36/fatty acid translocase, PPARα, and uncoupling protein (UCP) 2 and muscular levels of UCP3 [13]. The gene discussed is CD36; the disease is obesity due to melanocortin 4 receptor deficiency.