Researchers at China’s Peking University have discovered 396 genes linked to addiction. These so-called “addiction genes” are linked to pathways for substance abuse problems involving alcohol, cocaine, opium and nicotine.

According to the director Wei Liping, “The research provides a more complete picture of drug addiction, as genetic factors contribute to about 60 percent of the vulnerability to drug addiction.” By identifying genes and pathways to addiction, researchers are able to more accurate development treatment methods.