Number of people with Alzheimer 's estimated to nearly double every 20 years . Report : http://www.cdc.gov/mmwr/preview/mmwrhtml/rr0404a1.htm Studies show mental stimulation and exercise can help delay onset of dementia .
Number of people with Alzheimer 's estimated to nearly double every 20 years . Report : By 2010 , around 35.6 million people globally will be living with dementia . Studies show mental stimulation and exercise can help delay onset of dementia .