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Did you know?
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Thyroid conditions may make getting pregnant impossible.
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The average adult has about 21 square feet of skin.
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