TIL the youngest person to ever be diagnosed with Alzheimer’s Disease was only 19 years old, with initial symptoms beginning at 17.

https://www.alzra.org/blog/neurologists-report-worlds-youngest-alzheimers-case/

https://www.reddit.com/r/todayilearned/comments/15q4tfd/til_the_youngest_person_to_ever_be_diagnosed_with/