A new study shows that being wealthy can help you live longer. Researchers at Northwestern University tracked over 5,000 adults for almost a quarter of a century. In the study, published in JAMA Health Forum, they found that for every additional $50,000 of net worth accumulated by middle age, mortality rates fell five percent. These longer lives persisted despite having medical conditions like heart disease or cancer. And genetics and family income had no impact, as someone with more financial assets tended to live longer than a brother, sister or twin who didn’t earn as much.