Dear Doctors: I’m a 29-year-old man at a normal weight, and I eat a balanced and healthy diet. I’ve been having night sweats and sometimes also mild or moderate kidney pain. There is a history of cancer on both of my parents’ sides of the family. I’m not asking for a diagnosis, just advice on how to figure this out.

DEAR HARRIETTE: A few days ago, I went out with a friend for dinner. As I was about to pay, I realized I had left my wallet at home. Not to worry, I thought.

One day in 1951, during Willie Mays’ rookie season, my father took me to the Polo Grounds in Manhattan to see him play. What I recall most vividly is emerging from a shadowy corridor under the stands into the astonishing sunlit green of the outfield grass. The sheer expanse of a major league playing field is something you’re not prepared for as a child.

DEAR HARRIETTE: I never had a good relationship with my sister growing up — or even as adults, quite frankly. Recently, though, we have been getting along well. We do not live in the same town, but we talk on the phone occasionally. In the past, these conversations would often be awkward. This year, though, things have been much better. We have had very friendly conversations. I’m almost afraid to believe that this will continue since they used to be combative. How can I let go of the past and just be in the moment with her? My worry is that she used to hurt my feelings a lot. I have kept my guard up for so long, I’m not sure how to completely let it down. — Renewed Relationship DEAR RENEWED RELATIONSHIP: While you may not want to let down your guard completely, you can continue to ease into a relaxed engagement with your sister. When you two talk, assume the positive — that it will be a good conversation. Listen and share naturally.