Herpes causes dementia, say scientists

Alzheimer's disease could be caused by viruses like herpes, a group of dementia experts has warned. The worldwide team of 31 senior scientists and clinicians has written an editorial that suggests that microbes are the major cause of dementia.The herpes virus - the type that causes cold sores - and chlamydia bacteria are named as the major culprits, as well as a bacteria called spirochaete.