Genetic Key to Longevity?

Genetic Key to Longevity?: "Sept. 2, 2008 -- Scientists looking into aging say they've found a gene that's related to living a long and healthy life...One gene called FOXO3A caught the researchers' attention. Participants who were in better health had similarities on that gene...The study showed the long-lived group was leaner (lower waist-to-hip ratio), had lower levels of blood fats (triglycerides), lower glucose and insulin levels, and greater prevalence of FOXO3A gene variation at baseline..."up to 50% of the variation in human life span might be explained by genetic differences."...The FOXO3A gene is located on what researchers call the "insulin signaling pathway" and may be linked to how cells respond to stress...In studies done with mice and roundworms, genes that are along the insulin signaling pathway seem to protect against obesity that can come with aging, stress on a cellular level, and life span."

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