[cassianoleal]

> And the people who are more muscular _know_ that BMI isn't going to be accurate for them

That is not necessarily true. There are plenty of casually fit people around. They tend to be active but not necessarily all over fitness literature. They tend to be lean and have above average muscle composition, though are not necessarily "muscular".

These people will tend to receive an "overweight" analysis at the doctor's, and they might actually believe there's something wrong with them. I've seen that happen. I had to explain why BMI is bullshit to many friends who came out of an appointment thinking they had to change their diets despite being quite fit and healthy already.

You may argue that the doctors should know better but the unfortunate practical reality is that a good amount of them either don't, or just don't care enough to clarify it to patients. It's a lot easier to print out a report and hand over a set of general recommendations based on it.