eli5 What happens biologically when we become accustomed to spicy food?

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My wife can swear that her mouth is on fire after eating certain foods, but when I try the same exact food I often barely detect the heat she’s talking about.
I wasn’t always like this, it was an acquired taste. Sweet chilli used to be hot to me, now I dabble with habanero, naga, etc so I know something has changed physiologically…what was it?

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Anonymous 0 Comments

It’s kinda like that poison story (I don’t remember it very well) it was about a guy who got poisoned but didn’t die, because he’s been drinking small amounts every day, do his body became immune to it. Or at least that’s my understanding.

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