Oral fish oil intake may not improve and could even speed up cognitive decline in Alzheimer’s disease, a research team from China’s Army Medical University has found. Many older adults are accustomed to taking omega-3 supplements to help protect cognitive function. However, findings from the Chinese study challenge this view. The study was based on an analysis of more than 800 older adults in North America, around half of whom carry the dementia-risk gene APOEε4. The data showed that those...