From my own experience, I believe you can be addicted to sugar. It's simple. The more you eat it, the more you want and crave it. I got like this around halloween time, eating my kids candy. Wanting it and needing it everyday. If you stop eating Sugar so much, you want it less and less. Like anything, hard to stop cold. Once you stop, you really don't crave it, and then everything tastes much to sweet to me.