““Complicating matters, adolescent brains are more susceptible to substance abuse and dependence than adult brains, because they’re making so many new synaptic connections and sloshing around with so much dopamine. Pretty much all quasi-vices to which human beings turn for relief and escape—drinking, drugs, video games, porn—have longer-lasting and more intense effects in teenagers. It makes acting out especially tempting to them, and it makes their habits especially hard to break.””