They were thought to be a fluke. The elderly people’s brains were found to be full of plaques and brain fibrosis changes associated with Alzheimer’s disease after death, but they showed no signs of cognitive decline while they were alive. But then more cases emerged. Something protected those whose mental faculties remained bright even though they faced the same brain destruction as everyone else from memory loss, confusion, and other symptoms of dementia. It is.
As more brains are analyzed, it turns out that such cases are not uncommon. Up to 30 percent of older adults have significant plaque and tangles on their teeth.
Source: www.newscientist.com
