Predisposition for long life may be shared by family members

Family members may share a genetic predisposition to live to be 100 years or older, according to the results of a new study (Journal of the American Geriatrics Society 2000;48:1483-5).

Researchers, led by a team from Harvard Medical School in Boston, Massachusetts, examined the family trees of four American families in which people regularly lived beyond 90 years of age.

The research team compared the estimated life expectancy of the average …