If a person’s diet is high in unhealthy foods (high in fat and sugar), their brain is reprogrammed to continue choosing unhealthy foods.. These changes occur long before a person begins to gain weight, according to Dr Ian Johnston of the University of Sydney School of Psychology..

According to him, unhealthy foods make self-control weaken (wrong food choices are made), negatively affect memory and increase the risk of anxiety.. But importantly, a return to healthy eating and exercise can reverse many of the negative effects..

Scientists conducted an experiment with mice that were given sweet milk. It turned out that animals that could not resist sweet milk were more impulsive in terms of food choices.. However, after six weeks, after returning to a normal diet, the animals recovered self-control indicators.. There was also such an experiment: mice were evaluated in terms of impulsivity and fed harmful foods for a month.. Thus, the amount of junk food consumed was correlated with changes in indicators of self-control and in how much weight the animals gained..

Meanwhile, Monash University staff scanned the brains of obese and normal-weight individuals as they made their food choices.. Scientists were interested in which parts of the brain would be activated depending on the quality of the choice.. As a result, in obese volunteers, as it turned out, the parts of the brain responsible for controlling hunger and the areas that control the ability to reason were less connected..

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