Scientists have long been racking their brains for ways to treat Alzheimer’s disease, the most common type of dementia.

Turns out that the answer may lie within our own brains. Researchers from Northwestern University suggest that enhancing the brain’s immune cells may better equip them to clear out harmful clumps of the toxic protein amyloid beta, a hallmark of Alzheimer’s.

“Our study is highly novel because we had the rare opportunity to analyze one of the largest post-mortem brain cohorts of Alzheimer’s patients treated with amyloid-targeting drugs — similar to those now approved by the FDA for Alzheimer’s disease,” lead author Lynn van Olst said.