Cancer of the liver is high on the list. My wife's brother-in-law was a lifelong non-smoker and teetotal yet died from this form. Another family member is a life-long smoker and an alcoholic, has been hospitalised three times with multiple broken bones from high-speed car crashes and, a month ago, was expected to die. According to his medical report he has no underlying medical conditions other than one leg a little shorter than the other. He's driving around today like a lunatic! 🙄