I am 20 years old and i used to be thin and in shape but over the past 2 years i guess my metabolism has slowed down and ive packed on the beef. Its about time i done something about it, the obvious thing is to not eat as much and the things i do eat should be healthy. But since deciding to lose weight, i have found myself not eating anything except from a bowl of cereal in the morning and i drink very little water - although i know i should still eat healthy foods, i have totally lost my appetite. What are the effects of not eating at all?!?