1 in 10 Americans over 65 have dementia

One in 10 Americans over age 65 have dementia, a study finds. (

"This study is typical of older persons and covers populations previously excluded from dementia research," said Manly, a neuropsychology professor at Columbia University.

Ten percent of people who identified as Hispanic had dementia, but the rate of milder issues was higher — 28% tested positive for mild cognitive impairment.

In fact, every five-year increase in age was associated with higher risk of dementia and mild cognitive impairment, the report said.

Wandering and getting lost in a familiar neighborhood is another sign of dementia, as is losing interest in daily activities or events or acting as if they don't care about other people's feelings.

Another type of decline, called Lewy body dementia, is thought to be caused by abnormal deposits of the protein alpha-synuclein, which are called Lewy bodies.

Source ksl.com