For healthy skin, collagen is key: This naturally occurring protein keeps skin smooth and youthful, but our bodies produce less collagen as we get older. The result? Thinner skin, dryness, and more wrinkles.
Definition of BLACK BILE. : a humor of medieval physiology believed to be secreted by the kidneys or spleen and to cause melancholy. ADVERTISEMENT.1681. a humor of medieval physiology believed to be secreted by the kidneys or spleen and to cause melancholy. ADVERTISEMENT. 1681.
Normally bile travels through the common bile duct into the intestines. It exits the body in stools. However, a tumor in the ampulla of Vater can block the common bile duct, preventing bile from reaching the intestines and causing a build-up of bilirubin. When this happens, the skin and eyes turn yellow and urine becomes a dark yellow or brown color.