Flatulence

Flatulence is the expulsion of gas from the <a href="/facts/Gastrointestinal_tract/nK2zwqBS">intestines</a> via the <a href="/facts/Anus/KoCBptr5">anus</a>/butt, commonly referred to as farting. "Flatus" is the medical word for gas generated in the <a href="/facts/Stomach/Q4PPDGT6">stomach</a> or <a href="/facts/Bowels/nK2zwqBS">bowels</a>. A proportion of intestinal gas may be swallowed environmental air, and hence flatus is not entirely generated in the stomach or bowels. The scientific study of this area of medicine is termed flatology.
Passing gas is a normal bodily process. Flatus is brought to the <a href="/facts/Rectum/caqqyk2e">rectum</a> and pressurized by <a href="/facts/Peristalsis/R6zzQb1d">muscles</a> in the intestines. It is normal to pass flatus ("to fart"), though volume and frequency vary greatly among individuals. It is also normal for intestinal gas to have a <a href="/facts/Feces/r9HDKB8G">feculent</a> or unpleasant odor, which may be intense. The noise commonly associated with flatulence is produced by the <a href="/facts/External_anal_sphincter/YIGwm0kz">anus</a> and <a href="/facts/Gluteus_maximus/uwzV7yN1">buttocks</a>, which act together in a manner similar to that of an <a href="/facts/Embouchure/FdSfF4JD">embouchure</a>. Both the sound and odor are sources of <a href="/facts/Embarrassment/5xPmJgbk">embarrassment</a>, annoyance or amusement (<a href="/facts/Flatulence_humor/0AqLNAca">flatulence humor</a>). Many societies have a <a href="/facts/Taboo/3KuFszoI">taboo</a> about flatus. Thus, many people either let their flatus out quietly or even hold it completely. However, holding the gases inside is not healthy.
There are several general symptoms related to intestinal gas: pain, <a href="/facts/Bloating/GnjG2Mdz">bloating</a> and abdominal distension, excessive flatus volume, excessive flatus odor, and gas incontinence. Furthermore, <a href="/facts/Burping/MdGCPyC9">eructation</a> (colloquially known as "burping") is sometimes included under the topic of flatulence. When excessive or malodorous, flatus can be a sign of a health disorder, such as <a href="/facts/Irritable_bowel_syndrome/FW24EYbP">irritable bowel syndrome</a>, <a href="/facts/Celiac_disease/AKd5PkTc">celiac disease</a> or <a href="/facts/Lactose_intolerance/sD6q8shx">lactose intolerance</a>.

Flatulence open-in-new

Flatulence