About 20 years ago, neuropathologists began to report an inconvenient finding in the autopsied brains of people with dementia: Most have evidence of more than one disease. Studies since have shown the brains of up to half of people diagnosed with Alzheimer’s disease also have a key feature of Parkinson’s disease—deposits of the protein alpha synuclein. At the same time, up to half of Parkinson’s patients who develop dementia have elevated levels of beta amyloid and tau proteins, hallmarks of Alzheimer’s. Most dementia patients have multiple brain diseases – https://www.science.org/content/article/most-dementia-patients-have-multiple-brain-diseases-how-should-they-be-treated
Yikes.
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