The vagus nerve sends internal sensory information from the gut to the brain about the nutritional value of food. But, the molecular basis of the reward in the brain associated with what we eat has been incompletely understood.

Now, a new study published in Cell Metabolism by a team from the Monell Chemical Senses Center, unravels the internal neural wiring, revealing separate fat and sugar craving pathways, as well as a concerning result: Combining these pathways overly triggers our desire to eat more than usual.

https://www.sciencedirect.com/science/article/pii/S1550413123004667?via%3Dihub (open access)

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[–] angrystego@lemmy.world 1 points 9 months ago

I agree. Let me add that it's not added just to disguise the overall bad quality. It is added because the human body craves sugar. People find sweetened food more rewarding as was described in the article, and therefore they are more likely to buy it. Adding sugar is profitable.