Research : 18.4 % of 4-year - olds in the United States are obese . Native Americans , however , are at most risk ; minorities and women at lowest risk . Socioeconomic and lifestyle factors play a role in risk for obesity .
Research : 18.4 percent of 4-year-olds in the United States are obese . Native Americans , Hispanics , blacks at most risk ; whites and Asians at lowest risk . Socioeconomic and lifestyle factors play a role in likelihood for obesity .