Why do we lose our appetite when we see gross stuff?

Looking at some things, like an overflowing bin, or someone being sick, can be enough to put you right off your sandwiches. Why?

23 May 2017

Part of the show Why Bother Going to the Moon?

moudly fruit

moudly fruit

Credit:

public domain

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Question

Why do we lose our appetite when we see gross stuff?

Answer

[transcript to follow]

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