If one does not take care of themsleves and be their own advocate when dealing with the medical profession, one's demise could be hastened. Most people are determined by their genetic tree.
Just because on'e parent's lived to be a cerain age, does not automatically mean you will have identical longevitity. With the prolifertion of tests performed in preventive matainence mode, should help avoid serious problems,
Uncle's family:
1. Brother at 99.
2. Sister at 102.
3. Another sister at 104.
He passed away at 99, and still had a survivng sister of 104, and wife.
Wife Aunt V died at 96 two months after him.
Mom passed at 93.
Dad at 77. He was just a kid!!!
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"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).