1. Older adults with herpes simplex virus type 1 (HSV-1) have a higher risk of developing Alzheimer’s disease.
2. Antiviral medication is linked to a lower risk of Alzheimer’s disease in HSV-1 patients. 
3. The risk of Alzheimer’s disease increases with age for HSV-1 patients.
4. HSV-2 and varicella zoster virus (VZV) are more common among patients with Alzheimer’s disease.
5. The study suggests implications for long-term brain health in older adults.

Source: BMJ Open