Bellyache Rub Why Does Milk Give My 10 Year Old Brother A Bellyache?

Why does milk give my 10 year old brother a bellyache? - bellyache rub

During my 10 years younger brother of milk drinks that a really bad stomach pain that lasts about 4 hours gets my stomach hurts so much that he wept. When she rubs her belly, seems to help to stop and mourn.