A study seems to establish a link between oral herpes virus, which causes mouth cold sores, and Alzheimer’s disease. The study was published in Cell Reports on Jan. 2.

Declining blood levels of two molecules that occur naturally in the body track closely with worsening Alzheimer's disease, particularly in women. Levels were found to drop gradually, from women with no signs of memory,

Alzheimer's disease is the most common form of dementia, affecting more than three million Americans per year. And while its exact cause is unknown, researchers may have just had a breakthrough. A study,