Obesity
The Centers for Disease Control and Prevention said in 2003 that 400,000 people died because of being obese in 2000. Then in 2004 they said that the number was wrong. A 2013 review of scientific papers found that Grade 1 obesity (BMI 30-34.9) is not associated with increased deaths. Grades 2 (BMI 35-39.9) and 3 (40+) obesity are associated with much higher rates of death. It has been suggested that obesity is associated with mortality (death) because of mortality in Grade 2 and 3 obesity. People with grade 2 and 3 obesity are 29% more likely to die.