How to treat my son’s flatulence?

Q: My son is 15 years old and suffering from gas trouble. What is the treatment for this and what food he should eat and avoid?

A:He should avoid fizzy drinks, beans (rajmah), cauliflower, cabbage, fried onions and garlic. He should be tested for lactose intolerance as well. This can be done by any good laboratory, and can be followed up by a gastroenterologist.