According to Bloomberg, the average cost to attend a public four-year medical school is 207,868 — compared to under $15,000 back in 1978). Attending a private medical school will average substantially more — $278,455, which can leave you feeling a little faint and dizzy. Fortunately you don’t need to earn a medical degree to enjoy some of the more interesting facts about the amazing human body, particularly since it doesn’t come with a user’s manual and a warranty. Germaphobes be warned you may not want to read this list.
1. The human body can survive without eating for weeks, but cannot survive for more than eleven days without sleep.
2. During a lifetime, the average human will produce 25,000 quarts of saliva.
3. The human sneeze pushes air at a speed of 100 miles per hour or more.
4. The feet contain more than 500,000 sweat glands, producing a pint of sweat per day.
5. Living on each square inch of the human body is home to more than 32 million bacteria, most of which are harmless.
6. The human nose, with 6 million olfactory receptors, can detect 50,000 different scents. A dog’s nose , containing up to 300 million olfactory receptors, is up to 100,00 more acute than a human’s sense of smell. Dog-cognition expert Alexandra Horowitz provided this example: if a human can detect a tablespoon of sugar in a cup of coffee, a dog can detect a teaspoon of sugar in a million gallons of water (about the amount of water in two Olympic-sized pools).
7. The stomach lining is continuously replaced; it is completely replaced every 3 to 4 days.
8. The average human sheds up to 600,000 particles of skin every hour (about 1.5 pounds of skin per year).
9. A tongue print is as unique to each individual as a fingerprint.
10. The average human head contains 100,000 hair follicles. Blondes have the densest hair (146,000 hair follicles) compared to redheads (86,000 hair follicles).
For further reading: health.howstuffworks.com/human-body/parts/16-unusual-facts-about-the-human-body.htm