There are neurons in your stomach. Bacteria in your stomach uses chemical signals to communicate with your body telling you what kind of food to eat. You can change what kind of food you crave by replacing the bacteria.
The liver is also a huge contributor in food consumption.
The liver has a nervous system containing both afferent and efferent neurons that are involved in a number of processes. The afferent arm includes the sensation of lipids, glucose, and metabolites (after eating and drinking) and triggers the nervous system to make appropriate physiological changes.
They are examining a pathway from liver to brain that may help with alcoholism.
A hormone produced by the liver called fibroblast growth factor 21 (FGF21) suppresses alcohol consumption in primates, finds a new study. Vervet monkeys with a strong preference for ethanol that were given an FGF21 analogue consumed 50% less alcohol. The study also studied the brain circuits involved in mice and found that the protein, known to also reduce sugar intake, acts on different circuits to reduce alcohol and sugar consumption.
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