Ask unlimited questions for free
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
For a complete list of videos, visit our video library