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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.