When her son was a teenager, Connecticut mom Amy Wadsworth said, he was the type of kid parents rarely worry about.
He played sports, cared about his health and stayed away from drugs. In 2018, when he left West Hartford to start his freshman year at American University in Washington, D.C., she expected his biggest challenge would be adjusting to college life.
Instead, she said, he began using cannabis to cope with social anxiety and as a sleep aid…