The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
Neurons in our gut signal to our brain about the nutrient content of the foods we eat, thereby changing the levels of dopamine and other neurotransmitters in our brain, making us want to eat more or less of particular foods.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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Once you realize how certain foods are designed to make you ingest more of them via gut-to-brain (unconscious) dopamine signaling you will see how they literally control you from the inside.
In other words, many of the foods that are processed foods make you desire more of them, it's impossible to eat one chip kind of thing. Not because they taste good, but because in your gut they're activating the neurons that activate dopamine which make you seek more of those foods independent of blood sugar or anything else.
So, you may actually be eating more particular foods not because they taste good, but because they feel good on your tongue and mouth, and because the neurons in your gut which are totally independent of conscious taste are triggering the release of dopamine which is a molecule that makes you seek more of, and do more of anything that led to the ingestion of that food.
Second of all, it points to the fact, that the foods that we prefer, and the activation of the dopamine system, both through the gut, and at the level of conscious taste, in other words, what we like, is very plastic. It's mutable, and we can change it.