The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
There are about 1,400 different species of bacteria in your belly button.
10
Within three days of death, the enzymes that once digested your food begin to eat you.
22
The human body contains over a billion miles of DNA.
147
There's 100 trillion good bacteria living in your body.
17