Single gene change increases mouse lifespan by 20 percent

By reducing the expression of a gene known as mTOR, the scientists extended the average lifespan of a group of mice by around 20%. But the increased lifespan didn't affect all tissues and organs in the same way - while the mice retained better memory and balance as they aged, their bones deteriorated more quickly than usual.

Read more: http://1.usa.gov/17rdZD5 via NIH