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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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Cyanide works by making the human body unable to use oxygen.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.