Retrovirii

Researchers have revealed that an ancient retrovirus, found in between 5 and 10 percent of the world’s population, is significantly associated with addiction. The study uncovered a connection between the retrovirus and a gene that could make individuals prone to a variety of addictive behaviors.

The U.S. Food and Drug Administration has approved the prophylactic use of the antiviral drug Truvada to prevent people from contracting HIV infections.