A high percentage of infants suffer from colic.

Colic can be the result of:

Some infants have an intolerance to certain carbohydrates, with the result that rather than being absorbed they accumulate in the intestine. There, they are fermented by the intestinal bacteria, causing increased gas production, flatulence, colic and diarrhea.
Cow's milk protein which accumulates in the intestine, is fermented by intestinal bacteria, causing increased gas production, flatulence, colic and diarrhea.