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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.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
There are more nerve cells in one human brain than there are stars in the Milky Way.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.