This set of maps, from the U.S. Centers for Disease Control and Prevention, offers a state-by-state look at the tremendous increase in adult obesity over the past two decades. In 1990, no state had an obesity rate higher than 15 percent. By 2010, no state had an obesity rate lower than 20 percent, and 12 states had obesity rates greater than 30 percent.

Source: The Centers for Disease Control and Prevention