Some people were least able to resist food temptations – the rejection of food for them is impossible, even in the absence of severe hunger. A study by canadian scientists from the hospital of McGill University and the Montreal neurological Institute has shown that such paralysis of the will in relation to food depends on the activity of the hormone ghrelin.
Why are some people easily give up treats offered to them, and for others giving up food is a real meal? Scientists said that hypersensitivity to food cues (smell and appetizing appearance of food), not allowing people to unsubscribe from unnecessary piece depends on increased activity of ghrelin in the body such consumers. Ghrelin known as the hunger hormone. According to researchers, some people ghrelin literally paralyzes the will.
In the study, with the participation of 38 scientists in the experimental procedure they injected ghrelin, and then subjected them to exposure to various stimuli associated with food. In particular, people can feel different smells, and they were shown pictures of food.
Using functional MRI specialists monitor the brain activity of the participants. It turned out that some volunteers in the areas of the brain responsible for the production of dopamine (the pleasure hormone) increased activity of neurons, and a growth stimulant such activity was ghrelin. Ghrelin has launched the process of Association of the smell of food with a sense of fun, explained the study authors.
People who have these areas of the brain have too sensitive to activation of ghrelin, as a rule it is impossible to refuse offered food. It is possible that the hypersensitivity inherent in human genes, scientists suggest.
Earlier Magicforum wrote about that, what are the five habits that make people prone to overeating.