BMI is really a tool for helping to give indications of risk factors. If you have a BMI of 15, it's likely you have risks of various diseases. It's not a slam dunk, but a risk. But if you've chatted with a health professional and you're both happy that you're outside of the risk factors, then you'd not need to worry much. Some people are fine at BMI 26 or 17, some are outside of their healthy range at 24 or 19. It's a guide, not a rule.
The people who DO fall outside of the model are not that common though, especially if you're white. And these days the model accounts for more minorities, so even though it has issues, it's still worth listening to as it can highlight potential problems before they actually become problems.
The people who DO fall outside of the model are not that common though, especially if you're white. And these days the model accounts for more minorities, so even though it has issues, it's still worth listening to as it can highlight potential problems before they actually become problems.