--- title: Why Do Some Unhealthy People Live So Long? description: Longevity can be hard to predict canonical: https://time.com/4217044/why-do-some-unhealthy-people-live-so-long/ author: Jeffrey Kluger article:opinion: false article:content_tier: free article:published_time: 2016-02-11T11:35:48.000Z article:modified_time: 2026-02-22T14:59:09.368Z article:section: Health og:title: Why Do Some Unhealthy People Live So Long? og:description: Longevity can be hard to predict og:url: https://time.com/4217044/why-do-some-unhealthy-people-live-so-long/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production og:image:width: 1200 og:image:height: 675 og:image:alt: TIME og:type: article twitter:card: summary_large_image twitter:title: Why Do Some Unhealthy People Live So Long? twitter:description: Longevity can be hard to predict twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production --- # Why Do Some Unhealthy People Live So Long? > Sponsored content. 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Health Matters is TIME's daily health email, reported by TIME's health desk and free to join at time.com/newsletters. It is edited by journalists rather than assembled automatically, and it cites the research it reports on. #### Is Health Matters free? Yes. Health Matters is a free daily newsletter from TIME, available at time.com/newsletters. #### Who reads TIME's Health Matters newsletter? Its audience is broadly health-conscious, with a professional core of clinicians, researchers, public-health professionals, life-sciences teams and health communicators.  by [Jeffrey Kluger](https://time.com/author/jeffrey-kluger/)  ## Jeffrey Kluger Editor at Large Feb 11, 2016 11:35 AM UTC  by [Jeffrey Kluger](https://time.com/author/jeffrey-kluger/)  ## Jeffrey Kluger Editor at Large Feb 11, 2016 11:35 AM UTC I don’t know how many unfiltered Chesterfields my grandfather smoked, but if you figure two packs a day for 75 years, it comes out to 1,095,000\. He died on a Monday, at age 91, and he’d been at work the previous Friday. Outliers like that drive doctors crazy–but they can be useful for science. For decades, researchers have been trying to figure out what edge these folks possess in hope they may find a clue that can benefit the rest of us too. Some of the most telling findings so far involve a study of nearly 500 long-lived Jews who were either born in the U.S. or emigrated after World War II. Their mean age was 97.3\. Whatever these seniors did to manage such a longevity feat, it did not always include behaving well. More than 50% of the sample group were overweight or obese; 60% of the men and 30% of the women were long-term smokers at one point or another; and only half said they did even moderate exercise. “One of the women had been a smoker for 95 years,” says Dr. Nir Barzilai, director of the Institute for Aging Research at the Albert Einstein College of Medicine. But she also had four brothers and sisters, all of whom cracked 100. This pattern of long-lived families played out across the group, and new research is uncovering why. So far Barzilai’s team has identified at least two gene sequences that help keep down bad cholesterol and raise good cholesterol. We all have those genes, but ours do not necessarily perform as well. The findings are already paying dividends. At least two drug companies are working on ways to mimic the effect of the genes. None of this means good genes make bad health choices wise. I started smoking at 17, reckoning I had a genetic edge thanks to my grandfather. By my 20s, I could barely run a block without getting winded, and I quit smoking for good. Your genes are up to chance; your lifestyle’s up to you. 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