Researchers have found an association between sleep problems among older adults and dementia later in life. If diagnosed early, treatments like controlling stimuli before bed can help and possibly reduce the risk of cognitive decline.

Alzheimer's is the disease that creeps in and slowly erases what you know until, eventually, there's no more to erase. How this happens is still a mystery, but this short animation by Po Chou Chi tries to make poetic sense of what goes on.

What people experience as a memory problem 鈥� or a senior moment 鈥� is often really a problem of not paying attention, experts say. There are lots of reasons why brains get sluggish, but doctors say a "cognitive reserve" can help make up for damage that accumulates in an aging brain.

Activity fends off Alzheimer's disease in people over 80, according to new research that tracked the movements of people in their 80s. And just doing stuff counts. It doesn't have to be "exercise."