the.com/bile

the unsung digestive acid that emulsifies your fat and ferries your dead red blood cells away

means A bitter yellow-green fluid made by the liver and stored in the gallbladder, which helps break down fats during digestion — and, figuratively, the inner store of bitterness or rage.

from From Latin "bilis," the body fluid, which traveled through French "bile" into English. In ancient and medieval medicine, bile was one of the four humors: "yellow bile" (choler) made you hot-tempered and quick to anger, while "black bile" (Greek "melas" + "khole") was thought to cause melancholy — which is literally "black-bile-ness." That old theory is long discredited as physiology, but it left its fingerprints all over the language, which is why a bilious person is still a grouchy one.

liver-made
Produced by the liver, stored in the gallbladder
recycled
Up to 95% reabsorbed and reused daily
color source
Brown stool color comes from broken-down bile pigments
ancient temper
Black bile was the 'melancholy' humor in old medicine
fat fighter
Breaks large fat globules into absorbable droplets
for instance

bile duct stones — affect 10-15% of adults, cause cholecystitis and pancreatitis

bile acid malabsorption — causes chronic diarrhea in crohn's disease and post-ileal resection patients

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