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Did you know?
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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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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The FDA recognizes 118 routes of administration.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Blood is approximately twice as thick as water because of the cells and other components found in it.