'Fountain Of Youth': Amish Genetic Mutation Protects Against Aging

Normally, the gene SERPINE1 makes PAI-1, a protein that is associated with aging. However, 43 of the 177 individuals tested were found to carry mutations on the gene. They were also found to have longer telomeres, or the protective caps at the end of our chromosomes, which is a biological marker of aging in which shorter telomeres are signs of aging.