The most important thing I didn’t learn in medical school is about adverse childhood experiences, also known as ACEs. To be sure, if I had understood them then the way I do now, I would have been a better and more compassionate physician. Importantly, I would have avoided lots of mistakes. What kind of mistakes, you ask? I was pretty much a failure taking care of smokers, drinkers, drug addicts, and morbidly obese people. People who were chronically depressed or in chronic pain were not...