the brain.

What Causes Alzheimer’s? Scientists Are Rethinking the Answer..

It’s often subtle at first. A lost phone. A forgotten word. A missed appointment. By the time a person walks into a doctor’s office, worried about signs of forgetfulness or failing cognition, the changes to their brain have been long underway — changes that we don’t yet know how to stop or reverse. Alzheimer’s disease, the most common form of dementia, has no cure.