Eli5: Why do you vomit so quickly from food poisoning after ingesting bacteria contaminated food?
In: Biology
Evolution. Your body has developed involuntary reflexes to many dangerous stimuli. You blink and flinch to things that are potentially dangerous. If your finger tip feels a combination of heat, pressure, pain, you move your whole arm and finger away from the feeling, and your whole attention is focused on it. When your taste buds, smell-cells, acid and chemical, texture, whatever…come together when you are swallowing, it makes your body do the PUKE NOW THIS IS DANGEROUS reaction, just like your body did the HOT, MOVE, DAMAGE! on the stove.
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