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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.
The human body produces and destroys 15 million blood cells every second.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.