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Medical researchers contend that no disease ever identified has been completely eradicated.

The attachment of the human skin to muscles is what causes dimples.

No one seems to know why people blush.

In 1972, a group of scientists reported that you could cure the common cold by freezing the big toe.

The number one cause of blindness in the United States is diabetes.

The adult human heart weighs about ten ounces.

People who laugh a lot are much healthier than those who don't. Dr. Lee Berk at the Loma Linda School of Public Health in California found that laughing lowers levels of stress hormones, and strengthens the immune system. Six-year-olds have it best - they laugh an average of 300 times a day. Adults only laugh 15 to 100 times a day.

People who have a tough time handling the stress of money woes are twice as likely to develop severe gum disease, a new study finds.

Between 25% to 33% of the population sneeze when they are exposed to light.

Of the 206 bones in the average human adult's body, 106 are in the hands and feet. (54 in the hands and 52 in the feet)

In 1815 French chemist Michael Eugene Chevreul realized the first link between diabetes and sugar metabolism when he discovered that the urine of a diabetic was identical to grape sugar.

Approximately 16 Canadians have their appendices removed, when not required, every day.

Sumerians (from 5000 BC) thought that the liver made blood and the heart was the center of thought.

Men have more blood than women. Men have 1.5 gallons for men versus 0.875 gallons for women.

The first Band-Aid Brand Adhesive Bandages were three inches wide and eighteen inches long. You made your own bandage by cutting off as much as you needed.

The human brain stops growing at the age of 18.

In 1977, a 13 year old child found a tooth growing out of his left foot.

According to the Centers for Disease Control and Prevention (CDC), 18 million courses of antibiotics are prescribed for the common cold in the United States per year. Research shows that colds are caused by viruses. 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

It takes an interaction of 72 different muscles to produce human speech.

The first known heart medicine was discovered in an English garden. In 1799, physician John Ferriar noted the effect of dried leaves of the common plant, digitalis purpurea, on heart action. Still used in heart medications, digitalis slows the pulse and increases the force of heart contractions and the amount of blood pumped per heartbeat.

Blood is red only in the arteries after it has left the heart and is full of oxygen. Blood is a purplish, blue color in the veins as it returns to the heart, thanks to having picked up carbon dioxide and other wastes from the body's cells. In fact, your blood is red throughout only half your body. When cut, of course, the blood always appears red because it is instantly exposed to oxygen outside the body.

Contrary to popular belief, hemophiliacs do NOT bleed to death from minor cuts. This rare disease, which affects only males (it is carried by females, but they don't exhibit symptoms), involves an impairment in blood clotting—not an absolute inability to clot. Hemophiliacs today may take clotting serums and often lead fairly normal lives.

During his or her lifetime, the average human will grow 590 miles of hair.

The average Human bladder can hold 13 ounces of liquid.

You lose enough dead skin cells in your lifetime to fill eight five-pound flour bags.

Your thumb is the same length as your nose.

The storage capacity of human brain exceeds 4 Terrabytes.

The Mad Hatter in Alice in Wonderland was a symbolic character for the hat makers in towns of the late 1800's. The large felt hats of the day had supports made out of lead. The lead caused an organic form of psychosis (brain damage) to develop in the hat makers causing them to be declared crazy.

Although your system cannot digest gum like other foods, it won't be stuck inside of you forever. It comes out with other waste your body can't use.

The substance that human blood resembles most closely in terms of chemical composition is sea water.


The right lung takes in more air than the left lung.

A woman's heart beats faster than a man's.

The brain requires 25 percent of all oxygen used by the body.

There are 10 trillion living cells in the human body.

Females have 500 more genes than males, and because of this are protected from things like color blindness and hemophilia.

Homo sapiens shouldn't feel too high and mighty, even though they currently dominate the Earth. After all, they are covered with flesh that medical scientists have determined bears an important resemblance to Silly Putty. The specific gravity of your skin and the gooey stuff is close enough that doctors have actually used Silly Putty to align and test CAT scan machines.

The short-term memory capacity for most people is between five and nine items or digits. This is one reason that phone numbers were kept to seven digits for so long.

Studies shown by the Psychology Department of DePaul University show that the principal reason to lie is to avoid punishment.

People who have never been married are seven and a half times more likely than married people to be admitted to a psychiatric facility.

Cephalacaudal recapitulation is the reason our extremities develop faster than the rest of us.

"Soldiers disease" is a term for morphine addiction. The Civil War produced over 400,000 morphine addicts.

Dogs and humans are the only animals with prostates.

A study by researcher Frank Hu and the Harvard School of Public Health found that women who snore are at an increased risk of high blood pressure and cardiovascular disease.

Dr. Maurice R. Hilleman is considered to be the godfather of the modern vaccine era. Having created nearly three dozen vaccines - more than any other scientist, Hilleman is also credited with saving more lives than any other scientist. Probably best known for his preventive vaccine for mumps, Hilleman has also developed vaccines for measles, rubella, chicken pox, bacterial meningitis, flu and hepatitis B.

If you combined all the muscles in an average human in to one muscle, the force it would be capable of producing is about 2,000 tonnes.

Fluoridated toothpaste came about as the result of a discovery made in Naples, Italy in 1802, when local dentists noticed yellowish-brown spots on their patient's teeth - but no cavities. Subsequent examination revealed that high levels of fluoride in the water caused the spots and prevented tooth decay, and that less fluoride protected teeth without causing the spots. It took a while for the discovery to be implemented; the first U.S. fluoridated water tests didn't take place until 1915, and Crest, the firth toothpaste with fluoride in it didn't hit stores until 1956.

According to the Journal of American Medical Association, as of 1998, more than 100,000 Americans die annually from adverse reactions to prescription drugs.

You can see a candle flame from 50 Kilometers on a clear, dark night. You can hear the tick of a watch from 6 meters in very quiet conditions. You can taste one gram of salt in 500 liters of water (.0001M). You can detect one drop of perfume diffused throughout a three-room apartment. You can detect the wing of a bee falling on your cheek from a height of one centimeter.

Gold salts are sometimes injected into the muscles to relieve arthritis.

Undertakers report that human bodies do not deteriorate as quickly as they used to. The reason, they believe, is that the modern diet contains so many preservatives that these chemicals tend to prevent the body from decomposition too rapidly after death.

Captain Cook lost 41 of his 98 crew to scurvy (a lack of vitamin C) on his first voyage to the South Pacific in 1768. By 1795 the importance of eating citrus was realized, and lemon juice was issued on all British Navy ships.

During a kiss as many as 278 bacteria colonies are exchanged.

A passionate kiss uses up 6.4 calories per minute.

Drinking water after eating reduces the acid in your mouth by 61 percent.

Human thigh bones are stronger than concrete.

Hailed as a wonder drug in the late nineteenth century, cocaine was outlawed in the United States in 1914.

The lens of the eye continues to grow throughout a person's life.

The little lump of flesh just forward of your ear canal, right next to your temple, is called a tragus.

The first drug that was offered as a water-soluble tablet, was aspirin in 1900.

There have been cases of people dying from paper cuts. The paper cut gets infected, and without proper treatment you can die from the infection.