 39.7% in Mississippi and a 39.1% obesity rate in Tennessee. Ohio was number six with 38%. Alabama and Indiana tied at seventh with a rate of 37.9. And Delaware tied with Kentucky at number nine with 37.8%. In comparison, a decade ago, not a single state had an obesity rate of over 30%. Obesity costs $173 billion a year for the US healthcare system and is linked to other conditions, including diabetes, cancer, strokes, and heart disease.