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The average adult has about 21 square feet of skin.
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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.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).