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  "path": "/releases/2026/02/260221000321.htm",
  "publishedAt": "2026-02-21T00:43:23.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "A common bacterium best known for causing pneumonia and sinus infections may also play a surprising role in Alzheimer’s disease. Researchers found that Chlamydia pneumoniae can invade the retina and brain, where it sparks inflammation, nerve cell death, and the buildup of amyloid-beta—the hallmark protein linked to Alzheimer’s. Higher levels of the bacterium were found in people with Alzheimer’s, especially those carrying the high-risk APOE4 gene, and were tied to more severe cognitive decline.",
  "title": "Common pneumonia bacterium may fuel Alzheimer’s disease"
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