Eating less boosts Lifespan.

Scientists have long known that a restricted diet extends life.Now,researchers at the Salk Institute for Biological Studies have identified two enzymes that provide a new molecular explanation for how eating less leads to living longer.when researchers removed the two enzymes from the test animals,the benefits of a restricted diet disappeared.And when those enzymes were enhanced,longevity and disease resistance increased.understanding how these molecules influence longevity could have implications for developing new treatments for age-related diseases.