A Healthy Lifestyle Isn't All That Helps You Live Longer

There's more to getting to the age of 100 than just exercising and eating right. A new study shows your brothers and sisters have alot to do with it.

Researchers at Boston University analyzed family health histories of people aged 100 and older. They found that brothers of centanarians had a 17 times greater chance and sisters, an 8 1/2 times greater chance, of also getting to the age of 100.

The study suggests that centenarians have a group of genes that helps them avoid the diseases of aging, including stroke, heart disease and cancer.

If you want to find out what your chances of living to 100 are.. We have a "life expectancy calculator" for you. Just click here. You'll find the quiz--and you can find out your longevity potential.