The simple answer is that milk will curdle in your stomach whatever you drink or eat with it, as the digestive fluids that your stomach naturally produces are strongly acidic. read more
It is inappropriate to eat orange about one hour before or after drinking milk. Because once the protein in milk meets with the tartaric acid in orange and interact with each other, the solidification will occur, thus affecting the digestion and absorption of milk. read more
Even so, orange juice is really high in sugar which isn't necessarily the best choice in the morning. If you really love it though, consider drinking fresh squeezed orange juice or some other sort of drink. The worry with milk is simply that many people drink it all the time, but don't realize it doesn't actually do their bodies good. read more
Eat your fruits and drink your milk!!! Separately, they are very good for you. And by separately, I mean to say that you should allow at least one hour (ideally three hours) in between the consumption of the fruit and milk. read more