BMI stands for Body Mass Index. It gives you an idea of whether you're underweight, overweight or an ideal weight for your height.
Your BMI is
You are classified as
Your risk of obesity related diseases is
It’s useful to know because when your weight increases (or decreases) outside of the ideal range, health risks may also increase.
The BMI is a useful measurement for most people over 18. But there are limitations to this system. For instance: