People often stereotype healthy people being obsessed with health, but in my experience, sick people are way worse than healthy people in this regard. If I'm going to dinner with regular people, we just pick a restaurant we like and we go. The odds that health will come up as a topic of conversation is basically zero.
If a sick person is in the group, we have to start the whole process with some big discussion about what the menu options are like at each possible dining location, whether there are any special requirements because of their illness, and whether that appetizer is going to make them ill post-chemo. If the group has more than one sick person, it is almost guaranteed that they will devote at least a portion of the dinner conversation to how much they hope to regain their health.
Why do sick people insist on bringing up their health constantly? They would find it incredibly rude if I went around blabbing about how healthy I am.