flatulence : why do you fart,foods involved,what makes you fart, why you fat so much and when you hold in a fat where does it go?
Why do we fart? We fart because there is gas in our intestines that we need to get out. A small amount of swallowed air makes it into the intestines, but most of the gas there is produced by the bacteria that help to digest our food. This gas is expelled by burping and farting. The gas is mainly hydrogen and carbon dioxide. The smell comes from sulphur compounds that are only present in trace amounts. The nerve endings in your anus allow you to distinguish between a build-up of gas and a solid stool, so you can pass wind safely. Does everybody fart? Without exception. Gas ends up in the large intestine from air that is swallowed and from the action of the bacteria that live there. It is mostly nitrogen and carbon dioxide with some hydrogen and methane mixed in, with tiny amounts of skatole, indole, methanethiol, hydrogen sulfide and dimethyl sulfide to give it a stinky smell. Everyone farts but some people take enough care with the release that they are rarely caught out. W...