People who had adopted these lifestyle factors or started most of them by age 40 saw the biggest benefit. Last month, new research presented at the American Society for Nutrition’s yearly meeting explored the behaviors that can add decades — yes, decades — to your life. The study was made up of 719,147 people from the Million Veteran Program who ranged in age from 40 to 99. The data used was from questionnaires and medical records from 2011 to 2019. According to the research, there are eight lifestyle factors you should focus on to add years to your lifespan. And you’re probably already doing some of these things.