In sleep deprivation the brain is clamoring for “awards” – in the form of food
Scientists have found a physiological mechanism that causes obesity in people suffering from sleep deficit. Lack of sleep not only disturbs the process of metabolism, but also in a special way acts on the brain, increasing the pleasure derived from food.
It is known that inadequate duration of night sleep is a factor for increased risk of obesity and diabetes of the 2nd type. Previously, scientists explained this phenomenon solely to a violation of the metabolism in regular nedosypayuschih people, and only now established that a sleep deficit causes a subconscious attraction to sweet, fatty and salty food.
This is due to the increase in the brain levels of a substance called 2-arachidonoyl-glycerol. It is the so-called endogenous cannabinoid and is produced by the body. Scientists still do not know fully why the brain produces 2-arachidonoyl-glycerol, but we already know that it can play an important role in blocking the pain and eliminate negative emotions associated with pain.
Researchers from the University of Chicago (University of Chicago) found that level 2 was arachidonoyl-glycerol increases significantly in the human body in sleep deprivation in the course of the experiment with the participation of 14 young and healthy volunteers.
During the experiment, participants were allowed to sleep more than 4.5 hours a day.
Then they close for the evening, they proposed to lunch, and the lunch contained 90% of the daily calorie intake. However, when just 2 hours after lunch the subjects were offered without restriction to taste a different meal, they pounced on it as if lunch was not.
In this experiment, participants favored salty chips, sweet cookies and candies, although they could choose and fruits, oatmeal and green salads.
It was also established that during the period of sleep deprivation level 2-arachidonoyl-glycerol in organisms of participants increased by an average of 33% – the peak of this increase fell on the period from 14:00 to 21:00.