For decades, Alzheimer's research has focused on clearing amyloid plaques from the brain. But new drugs that successfully remove plaques have proven clinically "underwhelming", leaving the field searching for alternative approaches.

Stanford neurologist Katrin Andreasson has spent twenty years pursuing a different path—investigating how aging triggers an energy crisis in the brain's immune and support cells. Her work reveals that inflammation and metabolic dysfunction in microglia and astrocytes may be the real drivers of Alzheimer's pathology.

Most remarkably, her recent research—supported by the Knight Initiative for Brain Resilience here at the Wu Tsai Neurosciences Institute—shows that targeting inflammation in the peripheral immune system—outside the brain entirely—can restore memory in mouse models of the disease.

While human trials are still needed, Andreasson's findings offer fresh hope and demonstrate the critical importance of supporting curiosity-driven science, even when it challenges prevailing dogma.

Learn More:

• Alzheimer's Association honors Katrin Andreasson
• Research links age-related inflammation, microglia and Alzheimer’s Disease
• Q&A: How the aging immune system impacts brain health
• Rethinking Alzheimer's: Could it begin outside the brain?
• Why new Alzheimer's drugs may not work for patients
• Parkinson’s comes in many forms. New biomarkers may explain why.

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