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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.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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