DEAR DOCTOR K: I'm a 68-year-old man who has been feeling more tired and less "sexy" over the past several months. My doctor says my blood testosterone level is normal, but "low normal" -- a little bit above low. I know that some men take testosterone gel as a treatment for this. My doctor is not so keen on that. What's your opinion?
DEAR READER: I don't know nearly enough about your health or your symptoms to offer you personal advice. But I'll tell you what I think research has shown, at least so far. I'll warn you: It is a controversial area, and I reserve the right to change my mind as new research is published.