In America, medication is becoming almost as much a staple of childhood as Disney and McDonald’s. Kids pack their pills for school or college along with their lunch money. Some are taking drugs for depression and anxiety, others for attention deficit hyperactivity disorder (ADHD). The right drugs at the right time can save young people from profound distress and enable them to concentrate in class. But some adolescents, critics say, are given medication to mask the ordinary emotional turmoil of growing up; there is a risk that they will never learn to live without it.
According to America’s Centers for Disease Control, 11% of four- to 17-year-olds in the US have been diagnosed with ADHD, a label for those who are disruptive in class and unable to concentrate; just over 6% are taking medication. But the official figure hides huge variation across regions and class. Numbers are very high in the...