The foods you referred to, while I realize they were only examples, were chocolate and a milkshake.

I have a mild allergy to milk apparently. If I allow myself to drink a big glass of milk, I crave more. If I drink more, I CRAVE it -- to the point of waking up at 2am, unable to stand it, having to run to the kitchen and drink some. I have even took big gulps from the milk jug and then leaned against the fridge and realized I was acting like a total addict.

One day somebody told me that allergies can provoke a response of craving. I'd never heard that. I finally learned that if I don't want to crave milk -- and on LC eating, crave sugar, they are connected with me though I am not sure why -- I have to just avoid it altogether.

So you might consider that this could be (a) related to a component IN the sugary-foods you choose, and/or (b) related to an allergy, as well.

PJ