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Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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 more sensory neurons in the tongue than in any other part of the body.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Vaccines prevent between 2.5 and 4 million deaths every year.