Do you want to live to be 95?

Do you want to live to be 95? Would you be willing to let some scientists tweak your genes to accomplish that? They have already done it on mice. Scientists lowered the expression of the gene mTOR, which is involved in balancing energy and metabolism in the body.

The mice lived 20 percent longer, had better memory and balance as they aged, but their bones deteriorated faster.

They outperformed normal mice of equivalent age in maze and balance tests, indicating better retention of memory and coordination, and also retained more muscle strength and posture.

But they had a greater loss in bone volume as they aged, and they were more susceptible to infections at old age, suggesting a loss of immune function.