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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 training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
On average, the stomach produces 2 L of hydrochloric acid per day.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.