Although a primarily respiratory disease, recent reports indicate that it also affects the central nervous system (CNS). Over 25% of COVID-19 patients report neurological symptoms such as memory loss, anosmia, hyposmia, confusion, and headaches. The neurological outcomes may be a result of viral entry into the CNS and/or resulting neuroinflammation, both of which underlie an elevated risk for Alzheimer's disease (AD). In this review, the authors asked the following question: Is COVID-19 a risk factor for AD? To answer, they identify the literature and review mechanisms by which COVID-19-mediated neuroinflammation can contribute to the development of AD, evaluate the effects of acute versus chronic phases of infection, and lastly, discuss potential therapeutics to address the rising rates of COVID-19 neurological sequelae.
Golzari-Sorkheh M, Weaver DF, Reed MA. COVID-19 as a Risk Factor for Alzheimer's Disease. J Alzheimers Dis. 2023;91(1):1-23.