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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.