He didn't specify 'refined sugars' in his op. All it said was sugar.
I must say I find the comparison of an alcohol or food 'addiction' (term used very loosely, I am a firm believer that there is no such thing actually) to an allergy. An allergic reaction would have the opposite effect, making you get away from the thing that causes the allergy, rather than going back to it time and time again.
I'm allergic to strawberries, and believe me, I have no compulsion to go and eat them whatsoever. So that makes no sense to me to be honest.
I've changed my eating habits in August last year. I went from 368 to 238 without cutting anything completely from my diet. In fact, if I had cut something out totally, I probably wouldn't have made it this far.
I used to eat until I would throw up, and then eat some more, but I had no 'food addiction', not in the physical sense. I just liked the taste of the stuff, and I liked to eat, that's the top and bottom of it.
Other than a few days of headaches because I stopped drinking coffee, I had no 'withdrawal' symptoms, or the compulsion to go back to eating the way I was before. So I am rather sceptical about the 'compulsive' eating and the allergy theroy.