When that gene was blocked in the fat cells of mice during a study at the Joslin Diabetes Center, those mice ate a lot but remained thin and healthy.They lived almost 20 percent longer.

• 美国波士顿乔斯林糖尿病中心的研究人员，将小鼠脂肪细胞的胰岛素受体基因给阻断，结果那些老鼠虽然吃得多，却能保持苗条及健康，寿命也增加了将近20%25。