Scientists claim that pampering the high-calorie ‘comfort’ foods on stress results in weight gain than usual.
Scientists from the Garvan Institute of Medical Research in Australia are learning the molecular pathway in the brain, organized by insulin drives the weight gain.
On using an animal model, the team shows the combination of a high-calorie diet with stress resulting in weight gain causing the stress-free environment.
Herbert Herzog claims the study specifies of being more conscious about what we are eating on being in stress.
To analyze what controls stress eating, the team examines different areas of the brain in mice. Therefore the food intake controls the part of the brain known as the hypothalamus, as part of the brain amygdala involves nervousness.
Kenny Chi Kin shows that on being in stress for a long time and high-calorie food available makes mice obese. Thus, helps in gaining weight on consuming high-fat food in a stress-free environment.
At the center of weight gain, scientists were identifying the molecule known as NPY. Thus, it produces naturally in the brain in response to stress to encourage eating in humans and mice. Mr. Ip mentions that on switching off the production of NPY in amygdala weight gain is decreasing. Lack of NPY, weight-gain on a high-fat diet with stress is the same as weight-gain in a stress-free environment. Mr. Ip says that this is displaying the clear link between NPY, obesity, and stress.
To appreciate what may regulate the NPY boost in stress, the researchers analyze the nerve cells producing NPY in the amygdala. Thus, they have receptors or docking stations for insulin controlling the food intake.
In normal conditions, the body generates insulin after meal supports cells in absorbing glucose from the blood. This sends a ‘stop eating’ signal to the hypothalamus feeding center of the brain. Researchers were discovering that chronic stress is raising the blood insulin level in combination with a high-calorie diet. Thus, the level of insulin is high on comparing to mice are stress-free and receive a normal diet.
Hence, the study mentions the high levels of insulin in the amygdala are causing nerve cells to become insensitive to insulin. This stops them from analyzing insulin altogether. Sequentially, the insensitive nerve cells increase the level of NPY promoting eating and decrease the normal response of the body to burn energy with the help of heat.