World Health Organization (WHO) estimate that the global prevalence of obesity has almost tripled since 1975. In 2016, more 650 million adults had obesity.In the United States, the prevalence of obesity among adults increased from 30.5% to 42.4% of the population between 1999 and 2018, according to the Centers for Disease Control and Prevention (CDC).Obesity is associated with an increased risk of heart disease, stroke, type 2 diabetes, and some types of cancer, making it a major cause of preventable premature death.Estimates of the number of deaths that can be attributed to obesity vary widely, however, because of the complex interactions between body weight and factors such as age, smoking, diet, and physical exercise.In addition,.