There is a potential link between Alzheimer's disease and the herpes simplex virus-1 (HSV-1), which is a common cause for cold sores, a recent study suggests

Repeated head injuries suffered by sports players and military personnel — a known risk factor for Alzheimer’s disease — may induce dementia by reactivating the dormant herpes virus in neural tissues, according to laboratory experiments.

The oral herpes virus appears to be linked with Alzheimer’s disease, suggesting that the common infection might play a role in the disease, a new study published in the journal Cell Reports says. Herpes simplex virus 1 -- the virus behind oral herpes -- appears to trigger the appearance of tau protein in the brain, researchers say.

A new study found a link between cytomegalovirus (CMV) and Alzheimer's disease. Here's what a neurologist wants you to know, plus how to protect yourself.

Research published Tuesday is the first to connect the dots between a common herpes virus, head injury, and Alzheimer's.