My great grandmother was great at the guilt trip thing. Always with her health. Every doctor's visit was a dire thing. Time for her yearly mammogram? She'd call all her granddaughters and tell them she probably had breast cancer. Time for her yearly physical? She lost ten pounds without trying that year, so she must have diabetes. Etc, etc. Then they would fall all over themselves trying to cheer her up and get her to take better care of herself and the whole thing would start over again the next year. I watched her play this game with them my whole life. Then when she finally had a legimate health problem, they gave her so much 'help' and attention that they actually hendered her healing process.
Once, she was in the hospital for routine test dealing with her illness and it was meal time. My mom told me to get her to eat as 'she hadn't eaten a bite all day'. So okay, I opened her tray and set everything up, then when I took it over to her she told me, "Oh, honey, thank you but I'm so nauseous I couldn't eat a bite if I wanted to."
I shrugged, said okay and put the tray on the bedside table and sat down on the foot of the bed. Cue all her granddaughters (my mom and aunts) looking at me as if I had horns and jumping up to try to coax her to eat a bit. I said she would be fine to skip a meal or even a day of meals since she had an IV going and if all else failed the nurses would give her a supplement drink before she went NPO or something. Finally mom and aunts sat down. After a few minutes of no one paying attention to the fact taht she was not eating she asked, "Say, Jules, what did they bring me for supper?"
I told her what it was adding that desert at that hospital was very good, then went back to watching the tv. A few more minutes and she asked me to bring her tray back over and she'd try a 'few bites'. By now, my mom and aunts were watching this with amusement. Great grandmother ate the whole meal and sent me down to the cafeteria for another sweet. After that, any complains of illness was met with the same attitude and we never had problems getting her to eat or take her meds or whatever.