Why do we have a natural aversion to vomiting even though it makes us feel better almost immediately?
In: Biology
In addition to the other answers correctly pointing out vomiting is bad for you, we have an aversion to other people vomiting too – other people can set you off, or even just being in the same place as vomit.
Why? Think back to scavenging. The troop of proto-humans is all going to eat much the same food, because that’s what’s available. What happens if it is off or poisonous? You don’t want half the troop dying so as soon as one member vomits, that triggers the others and the possibly-offending meal is purged, the troop lives on.
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