Aging brain

For years, scientists have searched for ways to slow Alzheimer’s disease before it begins stealing memories. Most efforts have focused on developing drugs that remove harmful proteins from the brain, but a new study suggests something far simpler may also make a difference. Researchers have found that a specialized brain-training game could reduce dementia risk …

It begins as a quiet breach so small you’d never notice. Imagine the brain as a city behind high, guarded walls, with sentries carefully screening every visitor. For most of our lives, those gates stand firm, keeping harmful invaders out while letting life-sustaining nutrients in. But in Alzheimer’s disease, those defenses weaken. Tiny gaps form. …