Dear doctor: Out of the blue, my new primary care doctor asked me if I owned a gun. Was it appropriate, or even legal, for her to ask that?Dear reader: I can understand why you were surprised. Doctors generally try to avoid wading into political discussions, which, as we know, the topic of guns has become. Lately, though, many have been reassessing that arms-length stance and focusing on guns as a public health issue. That’s because, as doctors, our concern is preventing illness and injury.