Andrew Huberman· PhD
2 parallel neural circuits drive sugar cravings: 1) Conscious perception of sweet tastes. 2) Unconscious activation of sugar (not sweetness) sensing neurons in your gut.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
2 parallel neural circuits drive sugar cravings: 1) Conscious perception of sweet tastes. 2) Unconscious activation of sugar (not sweetness) sensing neurons in your gut.
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Both circuits trigger the release of brain dopamine that in turn, drives sugar craving/seeking.
In fact, this pathway is so powerful that they've done experiments where they completely numb all the taste and feeling in somebody's mouth they're blindfolded. So they don't know what they're eating and they're eating a food. That's either sugary or not sugary. And what they find is that even though people can't taste the sugary food they crave more of the food that contains sugar