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According to the report,ArabThe researchers studied a new study of 9652 people aged 55 and 19% who were overweight due to BMI, a measure that uses weight and height.
Among the group with a high body mass index, those with a larger pelvis had a smaller gray matter in their brains than smaller ones.
MRI was used to determine the size of the different parts of the brain of the participants.
The lowest gray matter was found in the brain in 1,291 study participants, or 786 cubic centimeters, which is well below the 798 cubic centimeters observed in 3,000 "healthy" people.
"Research has linked research, brain shrinkage, memory decline, and increased risk of dementia, but it has not been possible to determine whether more adipose tissue is protecting brain volume or It's harmful, "said Mark Hammer of the University of Le Havre.
"Our research focused on a large number of people and showed that obesity, especially in the middle (waist region), could be linked to decreased brain size."
But it's not clear if obesity leads to contraction of the brain or vice versa.
The gray brain consists mainly of nerve cells, while the white matter consists of nerve fibers.
The study, published in the Journal of Neurology, revealed no difference in the size of the white matter in the brain among the subjects studied.
The researchers also discovered a link between obesity and narrowing in specific regions of the brain.
"One day, we may be able to use a body mass index (BMI) and measure the hip fracture to determine brain health," said Hammer.
The scientists acknowledged that only 5% of the people invited to participate in the study had participated.
The group examined tended to be healthier than those who chose not to participate.
For this reason, it is possible that researchers do not give a realistic picture of the largest number of people.
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