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Thyroid conditions may make getting pregnant impossible.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.