For him, it was a wake-up call. Chris was no teenage stoner; he was a 38-year-old anesthesiologist. But it was not the first time he had used marijuana. He started smoking pot as a teenager, and by the end of his senior year he was using it every day. Over time, his use went down, but the death of his father in 1997 led him to pick it up again.
"I learned how powerful grief was," he said.