Milk is good for your body, everybody knows that, but, there is something we should pay attention in our daily life, now, I would like to tell you some kinds of food which can not be used with milk at the same time.
Milk and orange.
If the protein in milk met with the tartaric acid in orange, they will have solidification, those will affect the digest of milk, and generally speaking, milk can not mix with some other sour food, because 80% of milk is casein, if the PH is lower than 4.6, some of the casein can not be digest, so, it is not good if you have milk with some sour food. It is the same with milk and some fruit juice.
Milk and sugar

Milk and sugar will have some chemical reaction when they are heated, because the lysine in milk will have some reaction when they are heated, and generate one kind of fructose base lysine, this is harmful for your body, so, you should not put sugar when it is boiled.
Milk and chocolate
As you know, there are enough protein and ca in milk, but, there is some oxalate in chocolate, if you mixed them, there will generate a kind of calcium oxalate, it will affect the digest of ca.
Milk and medicine

Some people will choose milk to instead milk, in fact, milk will affect the digest of the medicine function, because milk will easy generate a cover around medicine, and then, ca, mg in milk will have the reaction with milk. So, the affection will be affected, so, you should have medicine 1 hour later if you have the milk.　　
As you know, milk has the sedative function, some people choose to have milk in the morning, then, you will feel sleepy, this is not good for your study and work, and what is the most important is that you can not have milk when you are empty. So, it is the best for you to have milk in the night, because milk can let people generate one kind of material which name is L-Tryptophan, this kind of material can help you have a good sleep, so, it is best for you to have milk in the night.
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