BMI Calculator for Children and Teens

Body mass index (BMI) is one way to estimate a person's body fat that takes into consideration the person's height. BMI is calculated using a person's weight and height. In children and teens, BMI is used to find out if a child or teen is underweight, of a healthy weight, overweight, or obese. A child's body fat changes with age. Also, girls and boys differ in their amount of body fat as they mature. This is why BMI for children, also known as BMI-for-age, includes gender and age.

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Preventing Childhood Obesity 

For the most part, overweight and obese children and teens need help eating healthier foods and getting quality sleep and exercise — just like the rest of us.

Allergy Relief for Kids 

Despite advances in allergy treatments in recent years, sometimes it’s a matter of simply keeping your kids inside more if certain allergens are in the air.

The Dangers of Bounce Houses 

Moonwalks and similar inflated bounce houses are loads of fun for kids — but they sometimes cause serious injuries and even deaths. Here’s what you should know.

Toxic Chemicals in Childhood 

How to minimize kids’ exposure to bisphenol A (BPA) and its replacements — as well as a group of chemicals called phthalates.