I'm glad the article mentions certain temporary forms of dementia. Had an uncle confined to a hospital ICU for an extended period. ICU was a windowless room with every bed walled in. Looked like a prison. Uncle started to exhibit signs of dementia. Until he was hospitalized, he was as sharp as a tack, so the family thought there was something suspicious about his sudden dementia symptoms. Doctors ignored the family, telling them they would need to find him a nursing facility, blah, blah, blah. It took an intern to find some research saying that being confined in such an awful ICU unit might be the problem. Took some effort, but Uncle was moved to an ordinary room with windows and his mental health improved dramatically.