One has to drink a lot for this to happen.
Gas would probably not be the only symptom and probably not the main one either.
Strictly a Martian problem

One has to drink a lot for this to happen.quote:Lactose intolerance (inability to properly digest milk, cheese, and other dairy products)
Gas would probably not be the only symptom and probably not the main one either.quote:Bacterial overgrowth in the intestines (often caused by certain antibiotics)
Strictly a Martian problemquote:Abnormal muscle contraction in the colon.
The quantity in a pint (two cups) of milk, about 24 grams, and greater would.quote:how much is "a lot" for someone with lactose intol to get gassy symptoms
Unless one small glass is actually a pitcher, then no.quote:So are saying one small glass of milk on an empty stomach for my roommate who has lactose intol would not be enough to cause him cramping gas pains and D?
It could simply be the gas was already there and he is experiencing IBS. It wouldn't be very easy to know. One would have to experiments and to be really scientific, they have to blinded. You could try that with your friend and then know for sure: one milk with lactaid and another regular milk with a little nutrasweet added (because lactaid milk is sweeter) and don't tell him which is which.quote:you are saying that it is something else that is causing the gas?