They may strip these links out (please don't!). This was an eye-opening two-part segment from 60 Minutes on some new large-scale research on living past 90 while staying vital. They looked at Alzheimers and dementia and how to avoid it and what things helped and didn't help seniors reach 90 while staying active and healthy.
There are some SURPRISING results! Like low blood pressure is BAD when you're older. And keeping some weight on is good. (I've just got my extra weight about 30 years too soon, LOL!). If they strip the links, Google "60 Minutes Living to 90 and beyond".
Part 1: youtube/watch?v=ULehA1JbtEY
Part 2: youtube/watch?v=JVF_6_8z9Xk