When I was a kid, my father wrote a weekly column for the student newspaper at Michigan State University, where he taught. “The Doctor’s Bag” ran in the State News for six years, from 1969 through 1975. It was eventually syndicated and ran in 50 campus newspapers, with a circulation of around 600,000. What this means, in part, is that when I was little people used to ask me if my dad was “The Doctor’s Bag.” (That’s how they used to phrase it: Is your dad “The Doctor’s Bag?”) I had no idea what the column was; I just knew he wrote it. At some point, I gathered that it was a medical advice column answering students’ questions about all things health related. It wasn’t until I was an adult and Dad sent me copies of the entire run of the column that I sat down and read them. I…