There are two reasons why milk and (dark) chocolate can't be eaten together. First, the ingredients in chocolate will destroy the calcium in milk, making it impossible to absorb it. In this way, some nutrients in milk can't be ingested. To put it bluntly, some milk is drunk for nothing. Second, the ingredients of milk will affect the function of the ingredients beneficial to human body in chocolate, such as antioxidant and antithrombotic ingredients, which can't be played out in the presence of milk. To put it bluntly, you basically ate the whole chocolate for nothing. In this way, the calcium in your milk is not absorbed, and many main functions of chocolate are not reflected, but you spend two kinds of money, which is very uneconomical. But eating milk and chocolate at the same time does not do much harm. Including milk chocolate is not inedible.