Eli5: How does nausea work? Is it purely physical or is it a psychological thing?

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In: 86

Answer 1

In short it can be caused by both physical or psychological stimuli.

Nausea itself is caused by the interactions between the gastrointestinal tract, including its enteric nervous system, the CNS, and the autonomic nervous system. Central and peripheral anatomical sites involved in nausea and vomiting induced by various stimuli like stress, food poisoning, etc