underweight

un·der·weight (ndr-wt)

adj.

Weighing less than is normal, healthy, or required.

n.

Insufficiency of weight.

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underweight

[un′dərwāt′]

Etymology: AS, under + wiht

1 a body mass index of less than 18.5. See also body mass index.

2 less than normal in body weight after adjustment for height, body build, and age.

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Obesity Task Force classification

Bariatric medicine A weight classification based on the body-mass index–BMI, per intl consensus. See Obesity.

Weight type–OTF classification  

Underweight  BMI ≤ 18.5

Normal  BMI 18.5–24.9

Overweight  BMI 25–29.9

Obese  BMI 25–29.9

 Class I   BMI 30–34.9

 Class II   BMI 35–39.9

 Class III   BMI ≥ 40

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Patient discussion about underweight.

Q. How to loss weight like a diet with tea,pills or other kind of healthy thing.

A. drink 8 oz of warm water with 1 tablespoon of lemon... first thing in the morning

Q. I need food guide for underweight. This is Liam. I had three kids and all are underweight? I don’t know how to make them healthy. I need food guide for underweight. They refuse to have healthy food. How can I get him to eat more and eat healthy, without having to force them?

A. Liam, do not give them too much of juice as it often contain more sugar and less vitamins than fresh or frozen fruits. After a period, give them healthy drink (like milk) instead of juice. If your child is more active than the food they had, then the child will surely be termed as an underweight. So make sure to give, more energizing foods like carbohydrates for an over active kid.