Alz

It is pernicious and frightening.  Loss literally of mind.  There are many places to study/research.

https://alz.org/

https://www.webmd.com/alzheimers/guide/alzheimers-disease-stages

There are sources about treatment and cures.  Please explore for yourselves.  From wholistic to traditional, find what works for you.
NB: Among symptoms check to see if there is vitamin B12 deficiency.  It can mimic Alz.

I've seen it firsthand in family friends and associates.  I've offered care and support for those with the disease and their families etal.  If you likewise offer care, love, support, seek the same for yourselves.  It's hard even somewhat soul destroying thinking you are alone.  You are NOT.

We have all witnessed more famous folks suffer.  It strikes, not caring about position nor status.

It sometimes onsets quickly but mostly is gradual.  A lost memory here and there.  Some confusion occasionally.  Then more often.  If it goes full term, people pretty much become vegetables,  On the way they forget about themselves and who is around them.

There is denial sometimes.  People brush aside what they see in themselves or others.

I've seen people fool others simply because they are around each other frequently.  The more you see th more you know.

I've seen the fear grow in patients.  They are slowly losing their minds.  It is frightful. 

Please learn what you can and do fo others and yourselves.

Face the music.

Hope and pray.  But do what you can to help find a cure.