Foods that are difficult to digest can cause bloating and gassiness. Artificial sweeteners, such as sorbitol, aren’t absorbed in the small intestine, so they end up in the colon, where they’re fermented by bacteria. The end result? Gas! Many people also find fructose difficult to digest. Fructose is a simple sugar, naturally found in honey and fruit, and it’s added to many processed foods. Fructose has to be converted to glucose by the liver in order to be used as an energy source for the body’s cells, but many people aren’t able to absorb all the fructose they digest, which can cause gas and digestive discomfort.