Ask unlimited questions for free
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Asthma cases in Americans are about 75% higher today than they were in 1980.
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
For a complete list of videos, visit our video library