Not only psychology, but training. If your body gets a load of sugar every time it tastes UPF additives, it learns to release insulin on taste to protect itself.

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esperent 2 hours ago | parent [-]

Isn't that what glycemic index means though? How quickly the sugar gets released?

	▲	rpozarickij an hour ago \| parent [-]
		Grandparent post is talking about the connection between taste and insulin, which would be a different mechanism from when a given food causes a spike in blood glucose based on its composition. Meaning that you'd get a different insulin response if you ingested something bypassing taste receptors vs being able to taste that food.