Common Bacteria Discovered in the Eye Linked to Cognitive Decline

New Study Reveals Infection-Driven Inflammation That May Enable Detection and Treatment Targets for Alzheimer’s Disease Chlamydia pneumoniae, a common bacterium that causes pneumonia and sinus infections, can linger in the eye and brain for years and may aggravate Alzheimer’s disease, according to a study from Cedars-Sinai. Published in Nature Communications, the discovery suggests this bacterium can amplify Alzheimer’s disease and points to potential interventions, including inflammation-limiting therapies and early antibiotic treatment.