Alzheimer's researchers are looking beyond plaques and tangles for new treatments

Scientists say research into Alzheimer's needs to take a broader view of how the disease affects the brain — whether that's changes in the cortex or the role of inflammation. (Matt York/AP)

The field of Alzheimer's research is branching out.

After decades of focusing on the sticky amyloid plaques and tangled tau fibers associated with the disease, brain researchers are searching for other potential causes of impaired memory and thinking.