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In 1864, the first barbiturate (barbituric acid) was synthesized.
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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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The average office desk has 400 times more bacteria on it than a toilet.
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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.