If existing research on a high-sugar diet isn’t enough to convince you, the university’s new study has found a good reason to change that diet,media reported. Excessive sugar is associated with increased appetite, often due to increased insulin levels and insulin resistance. New research has identified another reason why sugar increases appetite, which involves the brain.
Too much sugar consumption is associated with a number of health problems, including insulin resistance, the development of type 2 diabetes and certain cancers, an increased risk of heart disease, and decreased vision. A new study from the University of Michigan has found that it may also affect the effects of dopamine in the brain.
In the brains of flies, rodents and humans, there are neural circuits that rely on dopamine, a neurotransmitter, to process sweet foods. The study found that when eating a high-sugar diet, reward signals in the fly’s brain were either delayed or reduced, reducing their feelings of food and increasing their food.
The researchers found that when these reward signals decreased, the flies in the study were less satisfied and would end up eating for hours on end. As expected, flies that eat too much end up gaining weight. Fortunately, studies have found that replacing a higher-sugar diet with a healthier diet reverses this inhibition, with neural circuits restored to sensitivity and food consumption eventually reduced. This may help explain the fact that many people report decreased appetite when they switched to a low-carbohydrate diet like a ketogenic diet.