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Alternative
Health News
Brains scans of symptomatic Gulf War veterans show differences
BOSTON -- Veterans of the first Gulf War who returned with multiple health
symptom complaints show significant differences in brain structures from their
fellow returnees without high numbers of health symptoms, according to research
that will be presented at the American Academy of Neurology’s 59th Annual
Meeting in Boston, April 28 – May 5, 2007.
The study involved 36 veterans of the first Gulf War (1990-1991). Half of the
veterans had a high number (more than five) of symptoms, such as joint pain,
fatigue, forgetfulness, headaches, skin rash, nausea, and difficulty
concentrating. The other half of the veterans had a lower number (five or fewer)
of symptoms.
Researchers found that two areas of the brain involved in thinking and memory
were significantly smaller in the veterans with a high number of symptoms than
in the veterans with fewer symptoms. The overall cortex was five percent smaller
in those with more symptoms, and the rostral anterior cingulated gyrus was six
percent smaller.
Those with more symptoms also did not perform as well on tests of learning
and memory. On one test, those with more symptoms scored 15 percent lower than
those with fewer symptoms; the score was 12 percent lower on another test. The
researchers found that the smaller the brain volume was in those areas, the
worse the veterans performed on the memory tests.
"We don’t know the cause of these differences in the veterans’ brain volumes,
but the hypothesis is that they are related to exposure to hazardous substances
during the first Gulf War," said study author Roberta White, PhD, of Boston
University School of Public Health. "Many troops were exposed to hazardous
substances such as pesticides, and other studies have shown that exposures to
these substances affect the central nervous system."
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