The reason why some people find it so hard to resist finishing an entire bag of chips or bowl of candy may lie with how their brain responds to food rewards, according to researchers who found that when certain regions of the brain reacted more strongly to being rewarded with food than being rewarded with money, those people were more likely to overeat.

People with obesity are more likely to develop a rapid and irregular heart rate, called atrial fibrillation, which can lead to stroke, heart failure and other complications, according to Penn State researchers. They found that people with obesity had a 40 percent higher chance of developing atrial fibrillation than people without obesity.

The more mothers use food to soothe their babies, the more weight certain babies gained, according to researchers. The effect was only seen in babies with a surgent temperament — characterized by being more outgoing, active and drawn to new things and people, putting these children at a risk for obesity later on.

Children that use technology -- cell phones, video games, computers, or TV -- right before bed may be at risk for sleep problems, according to researchers. In a study, kids that used these devices before bed were associated with less sleep and higher BMIs.