9 Foods to avoid when your tummy hurts – #8 can kill you!

3. Soda

Although many people attribute soda’s aggravating qualities to the carbonation, you can really blame citric acid and the preservative sodium benzoate, says Dr. Chutkan.

“The chemicals can be hard on the stomach,” she says. But the carbonation can also bother some people.

“It can give you a full feeling and if you have an upset stomach and you’re burping a lot and feeling full, that can be a problem,” she explains.