Secrets of Centenarians

As scientists probe the factors contributing to longevity, they're discovering that some are beyond our control—but many are not.

Aging

By 2030, the number of Americans age 65 and over is projected to be about 71.5 million, of which nearly 10 million will be 85 and up. The good news is that many seniors report better health, greater wealth, and higher levels of education than seniors in past decades. Research on how to stay active and sharp and how to grow wiser is proliferating—it's up to us to act on the information now.

Dementia

Dementia is progressive loss of cognitive function, marked by memory problems and confused thinking. The most common form of dementia is Alzheimer's Disease, a fatal condition that affects more than 5 million Americans.