causes gas and bloating
Mechanism of Gas and Flatulence. Flatulence is a voluntary or involuntary expulsion of gas through the anus commonly referred to as passing gas or âfartingâ. Gas produced by the breakdown of food within the gastrointestinal tract may cause bloating and discomfort which is relieved upon passing flatus (âfartâ). Digestion is a physical and chemical process that produces byproducts, including gas that is passed out as flatus.