PKU is hard to deal with. you can only have a certain amount of protein everyday, I can only have 6 grams of protein each day. If you go over that limit you will become extremely emotional. Mood swings, Deppresion, etc. We have remakes of your food(not as good). I am sorry about that. um.. also when your brain is still devolping and you have to much protein you would become mentally retared. I hope this helps!