2024 Author: Jasmine Walkman | [email protected]. Last modified: 2023-12-16 08:29
The more we gain weight, the hungrier we feel. Normally, overweight people are more likely to resist the temptation to eat something high in calories than those who are overweight or obese.
There are biological reasons for this fact, says Robert Sherwin of Harvard Medical School.
To prove his point, the team led by him conducted an experiment involving healthy people. Half of them were obese and the rest were of normal weight.
Nuclear magnetic resonance imaging was used to measure how each of the volunteers' brains reacted to the food pictures displayed. Part of it is healthy, another part - high in calories.
Simultaneously with this experiment, the researchers changed the level of blood sugar in the subjects - in one case it was lowered, in another - normal. All tests were performed 2 hours after meals.
When blood sugar levels were low, the areas of the brain responsible for the stimulation became more active and signaled hunger. The signal was especially strong in overweight people when they were shown pictures of high-calorie food.
When blood sugar levels were normal, weak people had an increase in the action of other parts of the brain that have the ability to suppress hunger signals.
Obviously, there is a regulator - a higher brain function that controls the centers of encouragement. In obese people, this regulator is weakened. That is why it is easier for them to unlock the brain centers that stimulate the appetite, the authors of the study explain.
Obese people need to be aware of this fact and know that they cannot control themselves. In addition, they should keep in mind that the more pounds they gain, the hungrier they will feel.
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