I have allergic reaction to fruit (which is a pain being vegetarian) but I do have a craving for sugar and sweet things. I get real bad cravings for chocolate and at times I've eaten a half pack of biscuits in one go or 3 bars of chocolates or half a large cake. A couple of years ago I put on a stone in weight after eating all this. I've lost that weight now I've tried to cut down on the sugar stuff, but am not sure weight-loss is a good or a bad thing for mercury toxic people.