Ainda não se sabe se causa, se sintoma:
https://www.theguardian.com/society/2018/jun/21/alzheimers-link-to-herpes-virus-in-brain-say-scientists
Citando:
"The scientists did not set out to look for a link between viruses and dementia. Instead they were hoping to pinpoint genes that were unusually active in the brains of people with the earliest stage of Alzheimer’s. But when they studied brain tissue, comparing people with early-stage Alzheimer’s and healthy controls, the most striking differences in gene activity were not found in human genes, but in genes belonging to two herpes virus strains, HHV6A and HHV7. And the abundance of the viruses correlated with clinical dementia scores of the donors.
“We didn’t go looking for viruses, but viruses sort of screamed out at us,” said Ben Readhead, assistant professor at Arizona State University-Banner Neurodegenerative Disease Research Center and lead author."
