I see how it is a bad measure for some cases, but I don't think that makes it a bad tool. It's like financial advice that says how much someone should save for

I see how it is a bad measure for some cases, but I don't think that makes it a bad tool. It's like financial advice that says how much someone should save for retirement or spend on rent based on income. Someone with a normal job progression will probably be fine following it, but for doctors who take out huge loans and eventually have a huge increase in income it's not helpful and a more specific plan should be created. For BMI, most people should aim for the middle of the range and if they think there's a reason that they don't fit the scale then a doctor can be consulted.