For many years, theories have been proposed concerning the possible involvement of viruses with Alzheimer’s disease, but they have been seen as controversial. New research, based on examination of brain tissue from 1,000 deceased Alzheimer’s sufferers, has strengthened the case for some sort of link. The examination of those brains showed a much higher incidence of two strains of herpes virus than in the brains of deceased healthy controls. These two strains of herpes are extremely common, and typically begin life-long residence in the body and brain during childhood.

However, all scientists involved stress that it is unknown at present whether the presence of these viruses acts as triggers for Alzheimer’s, or whether the presence is a side-effect of Alzheimer’s.

Media articles on the work:

Researchers Find Herpes Viruses In Brains Marked By Alzheimer’s Disease

A Common Virus May Play Role in Alzheimer’s Disease, Study Finds

Childhood viruses linked to Alzheimer’s

Alzheimer’s link to herpes virus in brain, say scientists

The research article:

Multiscale Analysis of Independent Alzheimer’s Cohorts Finds Disruption of Molecular, Genetic, and Clinical Networks by Human Herpesvirus

All links have been added to Alzheimer’s > Neurology & Neuroplasticity