Body Mass Index (BMI)Topic OverviewYour body mass index (BMI) and waist size affect your risk of type 2 diabetes, high blood pressure, high cholesterol, and coronary artery disease. The following table shows the risk.
For Asian people, each risk category may include lower BMIs than those listed in the table. A BMI under 18.5 is considered unhealthy. There is risk that you are not getting sufficient nutrition (malnutrition). Complications of malnutrition include anemia, nutrient deficiency, heart irregularities, loss of menstrual periods in women (amenorrhea), cavities, and osteoporosis. eMedicineHealth Medical Reference from Healthwise 
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