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Here are a few facts that will keep conversations interesting:

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.

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.

Over 25% of Zaire is infected with a form of the Ebola virus that does not kill.

There are more than one form of the Ebola virus. Different strains are named after the area they were discovered in.

It only takes 7 lbs of pressure to rip off your ears.

Brain surgery is done with the patient still awake. The brain has no nerves therefore it has no sensation. The person is put to sleep to open the skull but after that the person wakes up to see the operation be completed.

A new born baby breathes five times faster than an adult man.

Smoking makes it almost impossible for a male to have a natural erection and it shrinks the penis. It also reduces the mobility of sperm.

A follicle that is more oval in shape will produce curlier hair, which, when viewed under a microscope, is more "flat" in appearance than a straight hair, which is "round".

Although it's only 2% of our body weight, the brain uses 20% of all oxygen we breathe, 20% of the calories we take in, and 15% of the body's blood supply.

Did you know that you can actually die from a broken heart? Studies have shown that people who had experienced great loss or sadness can develop cracks in their heart which could lead to death.

Every person has a unique tongue print.

Queen Victoria eased the discomfort of her menstrual cramps by having her doctor supply her with marijuana.

In 1990, a 64-year old Hartsville, Tennessee, woman entered a hospital for surgery for what doctors diagnosed as a tumor on her buttocks. What surgeons found, however, was a four-inch pork chop bone, which they removed. They estimated that it had been in place for five to ten years. The woman could not remember sitting on it, or eating it for that matter.

In Ft. Lauderdale, Florida, in the late 50's thru early 70's, there was a dentist named Dunat Yelle.

Americans spend an estimated $500 million each year on allergy treatments.

Sarin, the nerve gas believed to have been used in a Tokyo subway attack, can be made by anyone with an undergraduate degree in chemistry using easily obtainable chemicals and a formula readily available on the Internet. The agent, a type of organophosphate pesticide, causes paralysis by interfering with the breakdown of acetylcholine at nerve junctions. (If you do this, don't blame me when you get put on death row.)

Blonde beards grow faster than darker beards.

By age sixty, most people have lost half of their taste buds.

One group, the Hunza in Northwest Kashmir, reportedly have not experienced cancer. The group is also said to have unusual longevity.

In 1918 and 1919, a world epidemic of simple influenza killed 20 million people in the United States and Europe.

If you lock your knees while standing long enough, you will pass out.

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.

The sense of touch: electrical impulses travel from the skin toward the spinal cord at a rate of up to 425 feet per second.

You blink every 2-10 seconds. As you focus on each word in this sentence, your eyes swing back and forth 100 times a second, and every second; the retina performs 10 billion computer-like calculations.

Each red blood cell lives an average of 4 months and travels between the lungs and other tissues 75,000 times before returning to the bone marrow to die.

The average square inch of skin holds 650 sweat glands, 20 blood vessels, 60,000 melanocytes, and during the summer months, six or seven mosquito bites.

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

If you squeezed out all of the bacteria from your intestines, you could almost fill up a coffee mug.

Several well documented instances have been reported of extremely obese people flushing aircraft toilets whilst still sitting on them. The vacuum action of these toilets sucked the rectum inside out.

When honey is swallowed, it enters the blood stream within a period of 20 minutes.

Pain travels through the body at 350 feet per second.

The hardest substance in the human body is enamel.

Sometimes when you belch, a little bit of your stomach acids comes along. This makes for a very disgusting and burning burp.

Your hearing is less sharp if you eat too much.

The human kidney consists of over 1 million little tubes with a total length of about 40 miles in both kidneys.

Urine was once used as a detergent for washing.

Electrical stimulation in certain areas of the brain can revive long lost memories.

Ever wonder how a mortician keeps a dead person's mouth shut? Undertakers pass a suture through he nasal septum and tie it to the lower lip. Or the use an injector needle gun to place wires into the lower and upper jaws; these are then twisted together to close the mouth.

The average person can go as many as eleven days without water. That's assuming a mean temperature of 60 degrees Fahrenheit.

Human lungs are 100 times easier to blow up than a standard toy balloon. But they tend to make lousy party favors.

Heroin is the brand name of morphine once marketed by Bayer.

The kidneys filter about 500 gallons of blood each day.

A person breathes 7 quarts of air every minute.

Spontaneous human combustion is the process of the body's temperature becoming heated to the point that the body simply bursts into flame and incinerates. No one knows the actual cause of why this happens. Some blame a chemical reaction within the body, others blame supernatural causes.

Do vegetarians eat animal crackers?

Crazy but True