even if they lie about their height and weight most of them clearly look underweight
the average weight for females in sk are actually almost 60 kg so there's a huge difference between idols' weight and bmi compared to non-celebs and idols' weight aren't normal at all
I think people use underweight or unhealthy way to easy, we don't know them, we didn't saw their medical records, you can be skinny and healthy, like the other person said, BMI is useless until you know their real height/weight, which we don't, lets not speak that weight tend to change over time
