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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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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.