TUESDAY, Jan. 17, 2017 (HealthDay Information) -- Growing hypertension in very previous age could present some safety from dementia, a brand new research suggests.
In center age, hypertension -- additionally referred to as hypertension -- boosts dementia danger later in life, mentioned research lead researcher Maria Corrada. It additionally raises your danger for coronary heart assault and stroke.
However its onset within the eighth or ninth decade of life was linked to decrease danger of psychological decline in a single's 90s, her group discovered.
"Hypertension within the very previous is just not detrimental for psychological well being," mentioned Corrada, a professor of neurology and epidemiology on the College of California, Irvine.
A number of components could assist clarify the obvious affiliation between late-life hypertension and decrease dementia danger, Corrada mentioned.
For one, as folks age, blood strain may have to extend to maintain blood flowing to the mind for regular functioning.
"It is a matter of making sufficient strain to get blood to oxygenate the mind adequately," Corrada mentioned.
The researchers mentioned it is also attainable, however much less probably, that blood strain drops as dementia begins as a result of deterioration of mind cells. This might imply that aged individuals who do not develop dementia may have larger blood strain.
Hypertension within the very previous may need different advantages, Corrada mentioned. "There may be proof that hypertension may scale back frailty and incapacity," she mentioned.
It is clear that age issues, Corrada mentioned, though the research did not show a cause-and-effect hyperlink between hypertension and diminished dementia danger.
"No matter we all know and study concerning the well being of the youthful aged doesn't essentially apply to the well being of the 'oldest previous' -- the fastest-growing section of the inhabitants," she mentioned.
To avert a public well being epidemic of dementia, it is essential to know how danger for psychological decline may change over time, the researchers and others mentioned.
Hypertension could must be divided into not less than two courses, mentioned Dr. Sam Gandy, a New York Metropolis mind specialist.
"We often consider the younger grownup onset type, which if untreated can harm coronary heart, kidney, eye and mind blood vessels," mentioned Gandy, director of the Middle for Cognitive Well being at Mount Sinai Hospital in New York Metropolis.
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