South Carolina is No. 10 in The State of Obesity study with adult obesity rate at 32.1 percent, up from 21.1 percent in 2000 and from 12.0 percent in 1990. The state is doing worse, according to WalletHub. It placed in third place in terms of obesity and overweight prevalence. South Carolina ranked ninth in the 24/7 Wall St. analysis with an overall obesity rate of 31.6 percent.