Why is controlling my weight so important?

A healthy BMI (body mass index) for Asians should be below 23 kg/m² and for other ethnicities should be below 25 kg/m² (see section “Do I have a risk of developing diabetes?”). One study from the American Diabetes Prevention Programme found that losing one kilogram of bodyweight reduced the risk of diabetes by 16%. Losing bodyweight has been shown to reverse prediabetes and return blood glucose levels to normal.