Genetic evidence shows that smoking can cause us to age faster

A study of nearly 500,000 people has shown that smoking shortens the end fragments of chromosomes in the white blood cells of our immune systems. The length of these end fragments, called telomeres, is an indicator of how ...

Medical research

A way of life that keeps cells young in one region of Costa Rica

In Nicoya, Costa Rica, where average incomes are among the nation's lowest, the average life span is 85—among the world's highest. By comparison, a person in the United States can reasonably expect to live to just 77, according ...

page 1 from 13