Alzheimer’s disease could be triggered by common virus – as scientists warn it could travel from the gut to the brain

Researchers believe that up to 45 per cent of all Alzheimer’s cases could be caused by the cytomegalovirus (HCMV) that travels from the gut to the brain, triggering immune reactions that lead to brain cell communication issues. This unique subtype of Alzheimer’s involves amyloid plaques, tau tangles, a distinct viral footprint, and inflammation. The discovery could lead to new treatments using existing antiviral drugs and a potential blood test to identify active HCMV infections for early intervention.

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