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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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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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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.