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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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.