A buddy of mine recently took interest in gaining some weight and hitting the gym. He stands about 5'6" and weighs roughly 130lbs. While I was telling him about eating clean, and eating big, he revealed to me that he has I.B.S. (Irritable Bowel Syndrome).
He told me that if he eats any more then once a day his stomach turns to complete shit, he goes into pain, and even gets sick from it. Has anyone dealt with something like this before? Is there anything he can do to correct the issue allowing him to eat more? I didn't want to tell him he's shit outta luck. Any advice is appreciated.