That’s what I always wonder. Could it be that people who have health issues are a little more cranky and tend to get divorced more? Better yet, could it be that health issues affect decision making and make it more likely that someone will choose a poor mate? Or could it be that people in poor health have a lower-quality pool of people to choose from?
etc, etc...
Or that the other spouse bailed because they tired of the person’s illness, bad health habits, etc.