Dear Doctor: My wife wants me to quit eating black licorice because she heard it’s bad for you. I think it’s just that she can’t stand the taste of it herself. I told her I was writing this email, and she said I have to include that I’m 42 and on blood pressure meds. Dear Reader: Your wife is remembering a warning about black licorice issued by the Food and Drug Administration in 2017, just a few …