Thanks to advances in brain imaging, scientists have learned that brain loss with aging is not as severe as was once thought. Data from men and women who continue to flourish in their 80s and 90s show that in a healthy brain, any loss of brain cells is relatively modest and is pretty much restricted to specific areas, leaving the other areas functioning at an optimum level. There are certainly some changes that do occur, but like other characteristics of aging, much of the brain power decline is due to disuse rather than aging.

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