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7 walnuts a day deliver health benefits
RALEIGH, N.C., Dec. 17 (UPI) -- Stressful situations may make it more difficult for some seniors to think clearly, U.S. researchers suggest.
North Carolina State University researchers said increased blood pressure in older adults is directly related to decreased cognitive functioning, particularly among seniors with already high blood pressure.
Dr. Jason Allaire explained that study subjects whose average systolic blood pressure was 130 or higher saw a significant decrease in cognitive function when their blood pressure spiked. However, study subjects whose average blood pressure was low or normal saw no change in their cognitive functioning -- even when their blood pressure shot up, Allaire said.
Allaire said the findings may indicate that mental stress is partially responsible for the increase in blood pressure and the corresponding breakdown in cognitive functioning. However, Allaire noted that normal fluctuations in blood pressure likely play a role, as well.
The study is published in the current issue of Journal of Gerontology.
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