2.8 million lives each year. The Centers for Disease Control and Prevention (CDC) report that the prevalence of obesity increased from 30.5% in 1999–2000 to 42.4% in 2017–2018.People who have overweight or obesity can reduce their overall mortality risk by losing weight.
Weight loss also lowers the risk of cancer, metabolic syndrome, and other conditions. A 2018 CDC report found that in 2013–2016, 66.7% of adults with obesity attempted to lose weight.Various psychological and biological factors influence weight loss.