As a physician, it is my job to help people live longer and feel better. That is the mission of the medical profession. We use data and logic to advise people of their best choices that contribute to these goals. Over the past century, scientists have developed methods of finding reliable ways to prevent and treat illness. We know that the methods work, because we have been able to double the lifespan of the average individual when we apply what we learned. It also takes personal investment of each patient to maximize their wellness by making healthy choices. Let’s explore some ways to apply this knowledge.