For recording and diagnostic purposes, anyone with a BMI below 18.5 is classified as "underweight ... based on high-percentage body fat, between 15 and 35% of men with non-obese BMIs would ...

BMI is a formula that uses a person's height and weight ratio to assess whether they're underweight, normal weight, overweight or obese, although it is not a direct measure of body fat.

Over time, BMI became widely used as a quick and easy tool for determining whether an individual was underweight, normal weight, overweight, or obese. The standard BMI categories include ...

Underweight pregnancy was associated with lower risk for postpartum hemorrhage but higher risks for adverse neonatal outcomes.

BMI categories include: Underweight: BMI is less than 18.5 Healthy ... were instead based on high-percentage body fat, between 15% and 35% of men with non-obese BMIs would be reclassified as ...

Because the BMI calculation takes height into account, it can give a better idea of ranges than weight alone. If a child is underweight, consuming more calories may help them increase their weight.

between 15% and 35% of men with non-obese BMIs would be reclassified as obese. However, it turns out that BMI both under- and over-diagnoses obesity. The same study found that up to half of the ...