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.
10 hilariously insightful foreign words. Black bile was a concept first conceived by the Greek physician Hippocrates, who lived between 460 and 370 Before Common Era (BCE). An overabundance of the substance in the human system was believed to result in severe depression.0 hilariously insightful foreign words. Black bile was a concept first conceived by the Greek physician Hippocrates, who lived between 460 and 370 Before Common Era (BCE). An overabundance of the substance in the human system was believed to result in severe depression.