Fructose has long been vilified for being high in calories and causing weight gain. However, one group of researchers thinks there is nothing unique about the sugar that cause it to contribute to expanded waistlines. Instead, it may simply be that people rely on fructose too much and consume it in place of vitamin-rich fruits and vegetables.

Researchers from St. Michael's Hospital reviewed the findings of 41 previously published clinical trials that looked at the impact of fructose on weight gain. In investigations where participants were instructed to consume a set amount of calories, those who received a greater portion of their caloric intake in the form of fructose did not gain any more weight than those who ate a more balanced diet.

The researchers said this finding suggests that fructose is high in calories and when consumed in excess can it can contribute to weight gain. However, its effect on body composition may be no different than other high-calorie foods. Essentially, one calorie is the same as another.

Still, the findings are not meant to give a person a license to indulge. Filling up on calories from fructose may mean that a person has less room in their diet for other foods like fruits and vegetables, which are important for getting adequate amounts of vitamins.