Glucose and Fructose have different effects on the addiction centers in the brain.
Fructose produced activation in the brain’s ‘reward circuit,’ and increased the desire for food.
Glucose does not directly activate the reward center.
American College of Neuropsychopharmacology. “Fructose and glucose: Brain reward circuits respond differently to two kinds of sugar.” ScienceDaily. ScienceDaily, 10 December 2014