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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.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.