| The word vaccine originates from the Latin word for cow - VACCA from which they were first derived from. |
| Human infant is, literally, born with an unfinished brain and central nervous system. The reason for this is that the larger, "finished" brain cannot fit through a woman's pelvis. |
| A human being's entire genetic material is virtually identical to a chimpanzee. About 98.6% to be exact. Actually, a surgeon can operate on a chimp and find EVERYTHING in the same place as a human. |
| A chemical (isothiocyanates) found in cabbages may lower the risk of lung cancer in smokers by as much as 38%. |
| The reason most mosquito bites itch is because mosquitoes inject saliva into the persons skin before they suck your blood. They take it out once they are done, but if they are forced to fly away, they don't get a chance to draw the saliva out. And it is their saliva that causes the itch. |
| The average life span of a single red blood cell is 120 days. |
| On average, humans have 9,000 taste buds in their mouth, tongue, and throat. |
| The adult human body requires about 88 pounds of oxygen daily. |
| A woman's arthritic pain will almost always disappear as soon as she becomes pregnant. |
| There are over 600 muscles in the body which account for 40% of the body's weight. |