After age 50, the brain swaps protective immune cells for inflammatory ones

Scientists have discovered that around age 50, the brain's hippocampus — its memory centre — loses many of its longstanding immune cells and replaces them with more inflammatory ones. The surprising shift may help explain how normal ageing sets the stage for Alzheimer's disease and dementia. The finding opens new avenues for research into preventing these conditions.

Similar stories

💡 Did You Know Blood tests for early Alzheimer's detection — what researchers say Live Science · 7d ago 🔬 Science Scientists close in on why some people develop Alzheimer's dementia and others don't Newsweek Polska · 7d ago 🔬 Science Scientists identify brain tipping point that may determine who develops Alzheimer's Science Daily · 12d ago