Addictive behavior linked to an ancient retrovirus in our DNA that’s present in the genes of only some humans - New study in PNAS found that HK2, the retrovirus, is present in people who use injection drugs at two to three times higher rate than in the general population.

Addictive behavior linked to an ancient retrovirus in our DNA that’s present in the genes of only some humans - New study in PNAS found that HK2, the retrovirus, is present in people who use injection drugs at two to three times higher rate than in the general population.: https://ift.tt/2OMtCPy Read more... https://ift.tt/2zsaj90