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الأحد، 28 يوليو 2019

Study: Excess weight may accelerate the aging of the brain




Study: Excess weight may accelerate the aging of the brain


Study: Excess weight may accelerate the aging of the brain




NEW YORK (Reuters Health) - Overweight and waist circumference may be harmful to aging, and obesity may accelerate brain aging, according to a recent study.




Researchers at the University of Miami found that people with a wide waistline and a high body mass index (BMI) were more likely to have a thinner cerebral cortex, a condition previously associated with a decrease in brain function.


"This association was strongest among people under the age of 65," said Dr. Michele Conka, a principal epidemiologist at the University of Miami Miller School of Medicine. "Overall, this indicates that weight, especially before the elderly, Are associated with a lower degree of gray later in life ... The cerebral cortex is the outer layer of the brain and plays a crucial role in memory and language. "



The researchers found that overweight people had a thinner cortex of 0.1 mm per unit increase in their body mass index, while obese people lost 0.2 mm of shell thickness per BMI increase. The results were published online on July 24 in the journal Neurology.



"In older adults, the total cortical thinning rate is between 0.01 and 0.10 mm per contract," said Dr. Tatiana Rondik, chief researcher at the University of Pittsburgh.



But the study was unable to prove that excess weight caused brain weakness, a wider circumference was also associated with thinner skin, and to a lesser extent, BMI and waist circumference were associated with increased shrinkage of the total brain volume.



Conka said excess weight was responsible for poor brain health in previous studies that linked obesity to an increased risk of dementia and decreased brain function. He said it was not clear exactly why the cerebral cortex was damaged.



"It is believed that obesity is a chronic inflammatory condition, so this chronic exposure to inflammation may affect brain health." There are also other studies indicating that metabolic changes, such as insulin resistance, affect cortical metabolism and slow metabolism, Metabolic changes with obesity ".



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