Ask unlimited questions for free
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
For a complete list of videos, visit our video library