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The brain gives us double rewards for food: when we eat and when food reaches the stomach

A human study of the Max Planck Institute for Metabolism Research in Germany showed that the release of dopamine in the brain occurred in both times.

Dopamine release occurs both times. Pixabay

We know that good eating can stimulate the release of dopamine, welfare hormones, and now a human study from the Max Planck Institute for Metabolic Research in Germany shows that the release of dopamine in the brain occurs at two different times. : now food is digested and after reaching the stomach, as detailed in an article about this work published this Thursday in the magazine & # 39; Cell Metabolism & # 39; (Read: Eye to junk food)

"With the help of the new positron emission tomography (PET) technique that we have developed, we not only found two peaks of dopamine release, but we also managed to identify specific areas of the brain associated with this release," said author Marc Tittgemeyer, head of Translational Neurocircuitery Group of the Institute. "While the first release occurs in the brain region associated with appreciation and sensory perception, post-intake releases involve additional areas associated with higher cognitive function," he said.

In the study, 12 healthy volunteers received delicious shakes or a flavorless solution while data was recorded via PET. Strangely, the desire or desire for a shake is proportionally related to the amount of dopamine released in certain areas of the brain at the first tasting. But the greater the desire, the less post-dopamine intake is released. (We suggest: Why can't brownies be rejected? Neurologists respond)

"On the one hand, dopamine release reflects our subjective desire to consume food, on the other hand, our desire seems to suppress intestinal dopamine release," said Heiko Backes, group leader of Multimodal Cerebral Metabolism at the Institute and coprimer writer in Sharmili's study Edwin Thanarajah.

The suppression of release caused by the intestine can cause overeating from highly desirable foods. "We continue to eat until enough dopamine is released," Backes said, but added that this hypothesis had not been proven in future studies. Previous trials have shown intestinal-induced dopamine release in mice, but this is the first time shown in humans, according to the study authors. (You might be interested: Our second brain)

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