French scientists came to a conclusion, than obesity affects even intellect

French scientists came to a conclusion, than obesity affects even intellect. 5-year research with participation of more than 2,2 thousands of people showed that human weight and cognitive functions are directly connected.
 
Men and women in the age from 32 to 62 years took part in the experiment, they passed four tests, checking mental facilities, and then passed them again 5 years later. According to results, people with body weight index of 20 and less, can remember 56% in a lexical test, and those, who suffer from obesity (body weight index is at least 30), can remember only 44%.  
 
5 years later plumper people’s results turned to be even worse - from 44% to 37,5%. People with normal weight had same indices.   Scientists suppose that hormones, secreted by fats, are a reason of their weak apprehension. Probably, they affect brain cells negatively.  
 
Scientists also adduced another version, according to which brain arteries become condensed because of obesity, the way it happens with blood vessels.
 
Scientists called a new research “unsettling”. According to their words, overweight “affects each organ of human body”.