Should I avoid fructose to lose weight?

Obesity researcher Stephan Guyenet analyzes sugar intake and concludes that

"Sugar, including fructose, is not inherently fattening relative to other calorie sources."

However, he does believe that it can be fattening when used to sweeten foods and beverages, increasing their reward value.

Fitness and nutrition author Alan Aragon argues that many of the claims for fructose avoidance are flawed, and that calories and the degree of food refinement are more important issues.