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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.
There are 60,000 miles of blood vessels in every adult human.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.