Guardian temperament can work both ways. My parents were both Guardians. My father died one month before his 98th birthday. He always took care of himself and followed (sometimes when they were pretty silly) doctor’s orders, went for regular checkups, quit smoking when he was 40; and, in general, did all the things that you are supposed to do.
My mother, on the other hand, refused to go to the doctor, did not believe that a traditional (southern) diet was bad, maintained an old family tradition of not telling anyone if something was wrong, and did not follow any advice from doctors that were younger than her. She died at age 78.
Everything should be made as simple as possible, but not simpler. - Albert Einstein