overweight

A new study shows that children in China who are mainly cared for by grandparents instead of Mom and Dad are twice as likely to be overweight — contributing to the country's obesity epidemic.

Lipid metabolism may not sound sexy, but it's how you fit into that smaller pair of jeans. And when the fat says farewell, it has to go somewhere. Only some of it winds up in New Jersey.

In one study, people who ate near a heavier dining companion served themselves lots more food. Researchers say a fellow diner's weight is just one of many subconscious cues influencing what we eat.