Apparently President Obama is at risk of being overweight. An article on CNN, which reports Obama was told to lower his "bad" cholesterol (LDL), says his body mass index (BMI) is 23.7. If he gets to 25.0 then he's considered overweight.
According to this Department of Health and Human Services BMI is a "reliable indicator of total body fat," which is important because the total body fat is "related to the risk of disease and death." That phrase, "disease and death," is the real clincher here - it insinuates "pay attention or you might get diseased... or you might die!"