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Author Question: A nutrient that is normally nonessential but becomes essential under certain conditions is called ... (Read 88 times) |
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.