I don't know if you remember, but I was accepted into the EARLY J&J Alzheimer's Trial here in Las Vegas. Luckily for me, the trial was shut down before I got any pills, placebo or otherwise. I was accepted because my father died of dementia.
Almost everybody on my paternal side of the family eventually developed T2D and Daddy was being treated with opioids for 'burning feet' before it had a diagnostic name. I believe the combo is what proved deadly for him.
I was diagnosed prediabetic in my early 20's which is why it was a no-brainer for me to adopt Atkins in 1972. That choice most probably saved my life and my brain.
The Trial set me down the hole of research on my own. I had my DNA tested to find out my aPOE status. I joined an online forum:https://www.apoe4.info/
I learned that all the degenerative neurological diseases respond positively to LC eating.
As a strong proponent of Science, it's difficult to reconcile the deadly nutritional advice being peddled, when Science itself says the opposite is good for our neurological health:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3321471/