Another reason to low carb/skip the sugary junk food.

Carbs kill cells that regulate appetite - Boing Boing:

"Carbohydrates don't just screw up your blood-sugar: they release free radicals that kill appetite-suppressing cells. The research is from a Nature article by Dr Zane Andrews, a neuroendocrinologist with Monash University's Department of Physiology.

'The more carbs and sugars you eat, the more your appetite-control cells are damaged, and potentially you consume more,' Dr Andrews said."