It's the start of another year and the body mass index (BMI) is being criticized again. This time a Lancet-commissioned group ...

In a study of more than 5,000 mothers and their children, exposure to air pollution during the three months before pregnancy ...

BMI falls short as a way to measure obesity. Doctors need to also determine whether body fat harms a person's health.

An international committee of scientists has proposed changing the way obesity is defined and diagnosed. The proposal adds ...