Herpes simplex virus infection increases the risk of Alzheimer’s disease. Researchers at Umeå University, Sweden, claim this in two studies in the journal Alzheimer’s & Dementia.

Alzheimer’s disease is the most common among the dementia diseases. In recent years research has increasingly indicated that there is a possible connection between infection with a common herpes virus, herpes simplex virus type 1, and Alzheimer’s disease.

The hypothesis which links the herpes virus and Alzheimer’s disease is based on the idea that a weakened immune system among the elderly creates opportunities for the virus to spread further to the brain. This can in turn start the process which results in Alzheimer’s disease.

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