Scientists from the University of California claim that chronic lack of sleep actually leads to obesity development, since lack of sleep inhibits the work of the part of the brain that manages appetite and enhances the activity of pleasure centers.
Matthew Walker and his fellow physicians have found out that the lack of sleep really forces a person to overeat and thereby causes obesity. Scientists have monitored the work of the brain of 21 volunteers using functional tomography.
- During the month, the examinees did not sleep 24 hours once a week and at the end of these sessions; all participants were showed images with different foods, which the volunteers were asked to evaluate on the savouriness by four-point scale.
First of all, the study’s authors were interested in several parts of the brain related to the appetite, hunger and satiety.
As it turned out, the work of appetite centers decreased during the sleepless nights, but the activity of pleasure centers was far above the norm while watching the images with a delicious meal.
Apparently, namely lack of sleep was the reason that the participants selected the images with the highest calorie foods.
The authors of scientific work believe that these changes in the brain function actually confirm that chronic lack of sleep and insomnia are associated with overeating and obesity.