Key points from article :
Growth hormone receptors is linked to an increase in life span of about 10 years among men.
This common genetic mutation did not seem to have any effect on women.
Mutation was present in 12 percent of the men over age 100 - 3 times higher than in 70-year-olds.
Present in roughly the same fraction for both age groups in women.
The studies were published in the Science Advances and American Journal of Medical Genetics journals.
