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Vaccines prevent between 2.5 and 4 million deaths every year.
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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.