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.
Since black bile is the humor most inherently prone to aggravation and pathology, all excesses of it, whether in its normal or morbid forms, are quite undesirable. You could say that the difference between quantitative and qualitative plethoras of black bile isn't as great as with the other humors.nd morbid forms of black bile are even more deleterious in their effects than the morbid forms of other humors. Since black bile is the most effete of all the humors, its pathologies almost always involve excess, with deficiency only a minor consideration.