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Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

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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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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

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Video: ADH and the arterioles, kidneys, sweat glands and the Atrial natriuretic peptide (ANP)

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