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总结
多家海外媒体援引研究报道指出，部分感染新冠后自觉“康复”的人仍可能出现持续性神经系统影响。研究者通过MRI等影像学手段观察到与脑结构或功能异常相关的信号，并在部分长新冠患者的血液中检测到与阿尔茨海默病相关的蛋白水平升高。报道强调这类发现提示长期炎症或神经损伤风险，可能与记忆、注意力等症状有关，但仍需更大样本与长期随访来确认因果关系及实际痴呆风险变化。
正文
MRI Scans Reveal Your COVID-19 Can Leave Behind Nasty Brain Damage, Even After You "Recover" ZME Science Increased levels of Alzheimer's-linked protein found in some with long COVID Medical Xpress What's the Link Between COVID-19 and Alzheimer's Disease? Healthline Long Covid 'ups Alzheimer's risk'... sparking dementia timebomb fear for millions The Sun Dementia warning as scientists find Alzheimer's proteins in long Covid patients' blood MSN
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