Ask unlimited questions for free
There are more bacteria in your mouth than there are people in the world.
If you could remove all of your skin, it would weigh up to 5 pounds.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
The FDA recognizes 118 routes of administration.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
For a complete list of videos, visit our video library