Human Exposure and Consumption
Silver plays no known natural biological role in humans, and possible health effects of silver are a disputed subject. Silver itself is not toxic, but most silver salts are, and some may be carcinogenic. Silver and compounds containing it (such as colloidal silver) can be absorbed into the circulatory system and become deposited in various body tissues, leading to argyria, which results in a blue-grayish pigmentation of the skin, eyes, and mucous membranes. Although this condition does not otherwise harm a person's health, it is disfiguring and usually permanent. Argyria is rare, and mild forms are sometimes mistaken for cyanosis.
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Famous quotes containing the words human and/or consumption:
“There are few things more dreadful than dealing with a man who knows he is going under, in his own eyes, and in the eyes of others. Nothing can help that man. What is left of that man flees from what is left of human attention.”
—James Baldwin (1924–1887)
“The Landlord is a gentleman ... who does not earn his wealth. He has a host of agents and clerks that receive for him. He does not even take the trouble to spend his wealth. He has a host of people around him to do the actual spending. He never sees it until he comes to enjoy it. His sole function, his chief pride, is the stately consumption of wealth produced by others.”
—David Lloyd George (1863–1945)