There are plenty of other digital footprints we leave
such as websites we visit, the frequency with which we visit them, things we
google, what apps we download, people and things we search on Facebook, how many internet friends we have, who we interact with often, where we go in real life (phones have a GPS system and motion sensors), etc., etc., etc..
Many YouTube Alzheimer / medium chain triglyceride links can be
googled such as this with Dr. Mary Newport, who's
website is: What If There Was A Cure For Alzheimer's and Nobody Knew?