The chart broke down why most Americans die earlier than they should. It turns out that the leading cause of premature death isn’t poor health care, difficult social circumstances, bad genes, or environmental toxins. Instead, an estimated 40 percent of premature deaths are the result of personal behaviors we can change. I’m talking about daily, seemingly small decisions about eating, drinking, exercise, smoking, sex, and vehicle safety. These decisions add up, producing hundreds of thousands of fatal cancers, heart attacks, and accidents each year.