IMHO I never thought Alzheimer's was the condition that caused Biden's dementia.
I believe the above paragraph from the article is closer to the truth.
I am not close to him, so I don't hear the repetitious questions asked in a short period of time, or have witnessed his delusions and hallucinations , which are also Alzheimer's symptoms.
No doubt though , we all know he has some form of dementia, and Biden shows those symptoms. -Tom
It can be both.......................