Scientists have figured out why eating a dollop of wasabi makes it feel like your head might explode -- a particular class of receptor molecules on the surface of nerve cells. The discovery could lead to a new class of painkillers for a variety of conditions.

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Scientists have figured out why eating a dollop of wasabi makes it feel like your head might explode -- a particular class of receptor molecules on the surface of nerve cells. The discovery could lead to a new class of painkillers for a variety of conditions.