42% of adults in the United States have obesity, according to the Centers for Disease Control and Prevention (CDC). Obesity has links to several chronic health conditions, including heart disease and type 2 diabetes.Recent findings that obesity may also worsen outcomes in COVID-19 have encouraged some governments to create entirely new public health strategies to encourage people to lose weight.However, obesity is a complex issue with both medical and social causes, and achieving lasting weight loss can be challenging for many people.