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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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Medication errors are more common among seriously ill patients than with those with minor conditions.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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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.