Does the type of sugar you eat matter? Or is sugar just sugar? Experts looking into these questions are thinking there is one sugar that might make you fatter than others.

Fructose is the one, and it's thought that this sweet stuff dramatically enhances ipogenesis, the process by which the body converts sugar into fat. Check out this scary fact: In one study, people who consumed a fructose-filled breakfast drink produced double the body fat in the four-hour period that followed. Yikes. Those who drank a glucose-only beverage fared much better.

Want to steer clear of fructose? Then step away from the fruit juice and most processed foods, because many of them contain it in the form of high-fructose corn syrup (HFCS), which happens to be a major source of excess calories.