We have no way of knowing that. Two years ago, driving through the fast food line, he looked old but relatively healthy. He was far more frail and emaciated a year ago in the photos we've seen, and a year later, at 95, with several people stating his health was failing recently, I'm guessing he was fragile as a feather. Older people often don't realize how weak they are, especially when they have had tons of support from a caregiver. Example: My husband's grandparents had been supporting each other symbiotically and when he had a heart attack and spent some time in the hospital, it all went wrong. Next thing you know, they were driving around town and couldn't remember where to go despite living there for decades. He had been covering for her dementia and when he also began to lose his memory, their system failed.