Obesity increases susceptibility to H1N1 flu, a new study finds. It may help clarify why diseases like the flu and COVID-19 affect people differently.

New findings link maternal obesity and a higher risk of sepsis among newborn babies. The researchers suggest why, and a potential prevention strategy.

"...we believe it may be possible to control obesity and the complications of obesity by better regulating inflammation."

A fecal transplant of viruses shows promise in mice for treating obesity and type 2 diabetes, report researchers.

Children whose grandparents raise them may have an increased risk of childhood obesity, a new study shows.

Infants who spend less time moving in their first year may have greater risk of obesity later. "Even in infancy it's important for children to move freely."

"The commander of this doorman makes it easier for nutrients to get in, but harder for lipids to get out."

An expert explains when parents should think about helping their child lose weight and how families can work together to maintain healthy habits.

After Philadelphia imposed a soda tax, sales dropped 46%. But there's a catch: sales immediately outside the city saw a dramatic increase.

More Americans say they're striving to lose weight, but the average body mass index has gone up.