Adult obesity rates were above 35% in nine states in 2018: Alabama, Arkansas, Iowa, Kentucky, Louisiana, Mississippi, Missouri, North Dakota, and West Virginia. West Virginia and Mississippi had the highest rates of obesity totaling 39.5% of the population; while Colorado had the lowest rates of obesity totaling 23.0% of the population. Since 1988, adult obesity rose from an age-adjusted national average of 22.9%, to the 2018 average of 39.6%. Obesity is defined in adults as a body mass index (BMI) of 30 or higher. Additional findings were as follows: Between 2017 and 2018 . . .