Jimmy Kimmel Asks, 'What Is Gluten?'

The late-night host tests gluten-free people's knowledge about the substance they're avoiding.
3:34 | 05/09/14

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Transcript for Jimmy Kimmel Asks, 'What Is Gluten?'
-- interest in food nowadays people -- don't even -- -- cooking shows. And everyone has an opinion on what you should and shouldn't be putting in your body lately I don't know it's just here -- LA but. People are very anti gluten which bothers me because I'm very pro pizza and you can't be. It's an anti -- -- now some people -- -- for medical reasons which that I get I annoys me but I get it but a lot of people here. Don't eat gluten because like someone in their yoga class told them -- him. I keep asking people about this -- -- -- wonder how many of these people even know what gluten is so we decided to find out. In case you didn't. No I didn't know this is a mixture of two proteins found in wheat and some other natural grades but. Here in LA it's comparable to satanism in its its. So we -- a camera crew out to a popular exercise our right of the street from us to ask people who are gluten free simple question what is gluten. What is this thing you will not -- So we're gonna meet a person who doesn't eat gluten and together we're gonna guess if they know what -- is are you ready. Okay okay. You can improve improve diet I do indeed and what is good. Okay does he know what -- -- Violence is now. Ball as far as the media -- how to fix my body but what but what is that this is pretty sag -- I don't know. He maintained gluten free diet -- -- what is gluten. I does does the shirtless gentlemen. Yes -- cut. Who -- -- it's flower root of weak in the it's a flower. Favorites like -- think that pastries. It's -- and yet it's interesting so what is it exactly gruden is to Ukraine -- I -- when he -- I'm -- I have some. And my -- He intended to improve diet yet attempted to investment and the end what is -- Does she know what goodness. Well. It's the week. And products such as like bread or pasta is. Grace. Why do you avoid it and it she found. I mean that played -- -- and I had -- to the fullest. I have -- conference through a check she actually just got me into it. So she's thinking about about it well that's. Russian residents know about. -- then -- -- bubble. You maintain a good free diet I did I actually. Don't eat right we old friend Terry now turns. Out. What included. The casino does. Does George Jon Hamm no. It is part I believe. -- weeks that it. And I really don't know. --

This transcript has been automatically generated and may not be 100% accurate.

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