go to your doctor? plus, you should take in a lot of carbohydrates and protein if you are dieting like that. just because the food is low in calories doesn't mean it's always healthy for you. also, take multivitamins like Centrum and make sure you take Vitamin C naturally, like through fruits or drinks. I haven't been sick or had a bad cold in over a year now by following my own dietary plan, but controlled amounts of Vitamin C is always a good thing.