C.O.
ETA: I think you mean swollen COLON. As I don't know what a collum is. So this beckons the question - how do you know your son has a swollen colon?
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Welcome to mamapedia!!!
How old is your baby? If he's under six months of age - breast milk is best. Formula is next.
i will assume you are taking your son to a pediatrician for check ups. Have you asked this question of your pediatrician? If not, why?
Over six months? Introduce ONE new food at a time - to check for food allergies.
Babies bowels do NOT work like adult bowels, especially when they are young....how many bowel movements does he have now? Daily - every two days? What?
It's very hard to answer this question without knowing more information.
Good luck!