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Medicine and Health Trivia

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During a lifetime, one person generates more than 1,000 pounds of red blood cells.

An itch is a stimulus affecting the nerve endings between the dermis and epidermis; scientists liken it to a form of pain. But that's neither here nor there. It's usually caused by histamine released in the epidermis. Scratching stops it, either by interfering with the nerve impulses or by temporarily damaging the nerves themselves.

Scientists have identified more than 300 viruses capable of bringing fatal diseases to insects. The organisms are believed to be entirely different than those that cause disease in humans, and are thus harmless to man.

Devoid of its cells and proteins, human blood has the same general makeup as sea water.

From the age of thirty, humans gradually begin to shrink in size.

Despite accounting for just one-fiftieth of body weight, the brain burns as much as one-fifth of our daily caloric intake.

Your jaw muscle is the most powerful muscle in your body.

Hay fever is the sixth most prevalent chronic condition in the United States.

Human blood travels 60,000 miles per day on its journey through the arteries, arterioles and capillaries and back through the venules and veins.

Former U.S. president Jimmy Carter had an operation for hemorrhoids while he was in office.

Lead poisoning is known as plumbism.

Lacrimal fluid lubricates the eyes.

The iris membrane controls the amount of light that enters your eye.

The hardest bone in the human body is the jawbone.

The most common non-contagious disease in the world is tooth decay.

Mouth ulcers are the most common human affliction.

Corpses don't decompose as fast as they used to because of all of the chemicals and additives we eat now.

The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.

Skin is the largest organ of the human body.

Between the ages of 30 and 70, you nose may lengthen and widen by as much as half an inch.

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