Lifestyle Medicine focuses on applying behavioral and environmental principles to managing lifestyle-related health problems. Chronic diseases now account for 75% of healthcare costs in the US, many of which are strongly associated with diet and physical inactivity. While genetics play a role, the rise of these "lifestyle diseases" correlates with changes in American diets and exercise patterns over recent decades. Prospective randomized studies demonstrate that organized lifestyle interventions can significantly reduce disease incidence and healthcare costs compared to prescription medications. Lifestyle Medicine aims to educate and empower individuals to make personal choices that can transform health outcomes on both individual and societal levels.