The good side of a side effect: Brain swelling during Alzheimer's treatment may signal strong response

Medical Xpress

February 17, 2026

A new Alzheimer's treatment side effect that results in brain swelling may have an upside, according to a new study from Houston Methodist Research Institute. The research finds that beta amyloid—a protein that accumulates as plaques in the brain—may be cleared more in brain regions that had this side effect, signaling a stronger treatment response.