Body Mass Index (BMI) is a calculation that is based on your height and weight to determine if you are underweight, an ideal weight, overweight, or obese. The test is an indication of the total body fat that you are carrying around. The number ranges are fairly accurate but there are some circumstances when the calculations may not be 100% true. As these results are purely based on numbers, you should take the number you are given and discuss other contributing factors with your doctor (such as muscle weight or body type considerations).
A BMI of 30 or over is considered obese. The higher end of the scale for overweight people (25 – 29.9) and people that fall into the obese category are at an increased risk for developing type 2 diabetes. Other danger indicators are waist circumferences. If you are a man and your waist measures 40 inches or more and if you are a woman and your waist measures 35 inches or more, there is an increased abdominal fat risk factor for diabetes and other diseases.
Maintaining a healthy BMI is all about being at a weight that is right for your height and body type. Both of these goals will bring many more benefits than just better controlled blood glucose levels. You will also have increased energy, can reduce the amount of insulin you are on, and give yourself a longer life expectancy.
Reduce your total body fat to bring your BMI into a healthy range (18.5-24.9). Consult your doctor and get advice on how to meet your goals. And if you are just starting an exercise routine, get the okay from your doctor first. You do not want to overtax yourself at the beginning and your doctor may have some restrictions for you to ensure you do not suffer from injury or hypoglycemia.