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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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Thyroid conditions may make getting pregnant impossible.
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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.