There are many differences that can be seen in overweight people when they reach middle age as compared to those who are not overweight.
Though our brains naturally sink with age, yet in the case of obese people, studies have found out that their brains begin to shrink at a much faster rate along with promoting various diseases starting from diabetes, cancer and heart diseases.
A cross-sectional had also been done in which it had been found out that as one age, varied differences can be done in the two categories – lean and obese – of people. Differences had been found out in the volume of the white matter; it has been found out that as compared to lean people, overweight people are more prone to the reduction of white matter in their brains.
Age had also been taken into consideration; it had been found out that in the case of overweight people, their white matter begins to reduce at 50 years of age while in the case of lean people, the shrinkage of white matter begins at 60 years of age.
However, these differences mainly occur at this age, which means that we may particularly be vulnerable at this age. But it remains to be seen as to why only the brains of the overweight people shrink much faster as compared to others.
But despite the clear differences of white matter between overweight and lean individuals, no studies have ever shown any defects in the fields of cognitive abilities, when they are being measured in a standard test to an IQ test.