If you often feel dizzy, faint or light-headed after getting up, these
symptoms could indicate greater risk of developing brain disease such as
Parkinson's or dementia, and even an increased risk of death, warns a
new study.
Feeling dizzy after standing due to a
sudden drop in blood pressure can be a minor problem due to medication
use or dehydration. But when it happens often, it can be a sign of a
more serious condition called orthostatic hypotension, which is defined
as a drop in blood pressure within three minutes of sitting or standing.
"Our study looked at delayed orthostatic
hypotension, when the drop in blood pressure happens more than three
minutes after standing or sitting up," said study author Christopher
Gibbons from Harvard Medical School in Boston. "Our findings suggest
that more than half of people with the delayed form of this condition
will go on to develop the more serious form of this disease,” Gibbons
noted.
For the study, researchers reviewed the
medical records of 165 people with an average age of 59 who completed
nervous system testing and were followed for 10 years. Of those, 48 were
diagnosed with delayed orthostatic hypotension, 42 had orthostatic
hypotension and 75 did not have either condition.
The study found that over 10 years, 54
per cent of participants with delayed orthostatic hypotension progressed
to orthostatic hypotension and 31 per cent developed a degenerative
brain disease, such as Parkinson's or dementia with Lewy bodies. The
death rate over 10 years for those with the delayed condition who
progressed to orthostatic hypotension was 50 per cent.
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