Researchers have found an over-the-counter natural health product may help counteract negative effects of heavy cannabis use among adolescents aged 12 to 17, including depression, anxiety and diminished motivation in adulthood. Marta De Felice and Steven Laviolette demonstrated in animal models that interventions using antioxidant N-acetylcysteine (NAC) can mitigate the detrimental mental health effects of chronic cannabis use later in life. Sometimes referred to as "amotivational syndrome," chronic cannabis use in adolescents can result in a lack of motivation, diminished enjoyment from daily activities and other depressive effects. Currently, there is no known intervention strategy available. The study found that...