English ships carried limes to protect the sailors from scurvy. American ships carried cranberries.
Even if the stomach, the spleen, 75 percent of the liver, 80 percent of the intestines, one kidney, one lung, and virtually every organ from the pelvic and groin area are removed, the human body can still survive.
Every person has nearly 400,000 radioactive atoms disintegrating into other atoms in his or her body each second. But there's no need to worry about falling apart. Each body cell contains an average of 90 trillion atoms — 225 million times that 400,000.
Experts at the Center of Ergonomics at the University of Michigan have concluded that the tilt created where the seat and back of a rocking chair come together should be greater than 90 degrees — 120 degrees are good, or even 135 — for the health of the lower back.
False teeth are often radioactive. Approximately 1 million Americans wear some form of denture; half of these dentures are made of a porcelain compound laced with minute amounts of uranium to stimulate fluorescence. Without the uranium additive, the dentures would be a dull green color when seen under artificial light.
Following a family move, a series of studies have discovered that boys between the ages of 6 and 11 tend to have problems adjusting to new environments, particularly school. The research showed that moving during those ages could be so traumatic for boys as to cause a drop in academic achievement or even I.Q. The results were not conclusive for girls.
There are eight bones in a human wrist.
There are more than 10 trillion living cells in the human body.
The body has 70,000 miles of blood vessels. The heart pumps blood through this labyrinth and back again once every minute.
There are more than 100 different viruses that cause the common cold.
The body’s daily requirement of vitamins and minerals is less than a thimbleful.
Moderate dancing burns 250 to 300 calories an hour. Twenty minutes of moderate dancing will elevate heart rate up to aerobic levels. One study found polkas, swing dancing, and waltzes to be particularly effective for weight loss.
There are ten human body parts that are only three letters long: eye, hip, arm, leg, ear, toe, jaw, rib, lip, gum.
The body's largest internal organ is the small intestine at an average length of 15 to 20 feet and has a diameter of no more than an inch and a half. The large intestine measures an average of 5 feet.
More than half of school-age children in the U.S. have no cavities in their permanent teeth, compared with only 26 percent who were cavity-free in the early ‘70s, the American Dental Association has reported.
Today, American dentists use some 13 tons of gold each year for crowns, bridges, inlays and dentures. The reason? Gold is non-toxic, it can be shaped easily, and it is tough -- it never wears, corrodes or tarnishes.
The brain is surrounded by a membrane containing veins and arteries. This membrane is filled with nerves of feeling. However, the brain itself has no feeling; if it is cut into, the person feels no pain.
Most people by the age of sixty have lost 50 percent of their taste buds and 40 percent of their ability to smell.
Tongue prints are as unique as fingerprints.
The brain of Neanderthal man was larger than that of modern man.
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