Do anti-aging drugs really work? I beleive some of them do. with that said, Longevity seems to be a mix of family genetics, a energetic mindset, healthy living and good food. For my grandma, who lived to be 107, it was a second husband. She married him when she was forty seven, a couple of years after my granddad died of a heart attack. They were married 60 years when she died and very happily. I think being positive is the key, married or not. Think positively.