too few people mention number of sexual partners, sharing food, shaking hands, and other ways of spreading germs mammal to mammal (include the human mammal). An overweight family member who didn't have the best diet - though it wasn't the worst - amazed me by living to age 95. She didn't do well at allllll in her last 5 years, but still....I was sure she'd die by 80. I think having slept with only one man, being a germaphobe and neat-nik, and being a stay-at-home mother for many years helped keep her from the germs that can cause aging and lead to disease. Her only exercise was cleaning and running after kids and walking briskly room to room to make sure everything was done right. She didn't like the outdoors at all and didn't worry about her figure.
my understanding was that her birth date and age was quite verified. also, a Japanese person lived to 119....Okinawan, I think.