The gut might have feelings but it does not make executive decisions, that's the brains job.
But what about the people with chronic bowel diseases or undetected food intolerances that can cause ongoing gastric inflammation?
In these cases the gut will excrete cytokines in response to the inflammation. Then the communication system of the vagus nerve will signal the brain to do something. This might be as immediate as the vomit reflex in the case of bad food or if the offending substance is not a poisonous food but a food causing an allergic reaction or a chronic bowl infection the result is an ongoing feeling of malaise as a result of gut secretions sending signals to the brain that there is a problem.
"It may be not your head it could be your tummy" (Henry Oselink 1).
"chronic exposure to elevated inflammatory cytokines and persistent alterations in neurotransmitter systems can lead to neuropsychiatric disorders and depression". 2.
1. Interview Henry Osiecki - BioConcepts "The Gut-Mind Link and how emotional responses can trigger physiological disease states and symptomology ."
2. Neuroscience. 2013 Aug 29;246:199-229. doi: 10.1016/j.neuroscience.2013.04.060. Epub 2013 May 3.
Inflammatory cytokines in depression: neurobiological mechanisms and therapeutic implications.