In 16 states, at least 35 percent of adult residents are obese, an increase from nine states two years earlier, according to new data from the Centers for Disease Control and Prevention. However, in all 50 states, more than 20 percent of adults are obese. Although the numbers vary from state to state, the highest prevalence of obesity was found in the states of the Midwest and South. Looking at the US population as a whole, about 42 percent of adults are obese, according to the CDC. Obesity, a medical term based on a calculation called the body mass index, can lead to a number of health problems, including an increased risk of diabetes, high blood pressure, heart disease, liver problems, arthritis, some cancers, and depression. Overeating and sedentary lifestyle are common causes. Obesity appears to be on the rise among US teenagers as well, according to a separate new report from the CDC. It found that as of August 2020, 22 percent of teens ages 2-19 were obese, up from 19 percent a year earlier, with the biggest increase seen in kids 6-11 being nutritious foods, more screen time and fewer opportunities for physical activity such as recreational sports – likely contributed to the accelerated weight gain in children. Treatment for obesity usually involves lifestyle changes: eating healthier diets that reduce caloric intake and getting more exercise. Health experts say that even a modest 5 to 10 percent weight loss can improve or prevent the health problems associated with obesity.