New research reveals longevity gains slowing, life expectancy of 100 unlikely

Is it just genetic? On my father’s side, people typically live to 100 at a minimum and are perfectly healthy mentally and physically right up till a week or so before they die. My grandmother is 103 and can still lives alone in her house and can walk unassisted, has a memory sharp as anything, and so on. Maybe look at long lived families and figure out what is different about them?

I think it's just plus or minus 10 years for whatever fate (genetics) had in store for you. That plus or minus being the little we can control (diet/activity).