'Fed Up' With Sugar: Katie Couric's 10-Day Challenge

New documentary "Fed Up" explorers America's obsession with added sugar in foods.
3:00 | 05/23/14

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Transcript for 'Fed Up' With Sugar: Katie Couric's 10-Day Challenge
It is controversial new entry into America's raging debate over obesity yeah. What are -- approached this epidemic has been dead wrong. The new movie fed up says the country has gone playoff course. Explaining obese people including children for their weight problem for the message that's been pushed on us. Instead according to the movie the real problem is the food companies. -- their products up wheat sugar which critics called dangerous and addictive. Sugar his voice. Diabetes and heart disease political problems from strokes lung cancer -- those diseases are being driven. -- If a foreign nation we're doing that our children we -- defend our found. Years from now we're -- to say I can't believe -- let them get away with. According to the movie most Americans are hooked on sugar and truth be told. I and one of them. Cookies and cheesecake jelly beans they seduce me every time. OK so I'll admit that -- one of these have a knowingly help -- people -- work out every day a lot of fruits and vegetables I don't smoke I don't drink. Turning to drink caffeine. I won a major rights and that is. Sure. So you can imagine my discomfort when my colleague Katie currents. Who's the narrator and executive producer of fed up announce something called -- fed up challenges. Ten days with no sugar I'm gonna start your new portal also she then went on Good Morning America and publicly roped me into it and Dan Harris at Nightline is going to be doing it with me. Thank -- -- that meeting though here are the rules of the challenge -- soda or sweetened beverages that includes diet soda and Jews. No artificial sugars or sugar substitutes. And no fluids that had added sugar which includes not only my favorite desserts but to my surprise everything from yogurt to. To canned foods to -- stuff. Bill Gates this and -- act quirky earth. Pure breeds get more and I'm doing a lasted it. Ruth -- news. You're not -- next -- being one of the challenge I'm missing sugar already. And everybody's having. John -- and and -- game. I mean -- happy. I -- having this room. Which -- natural sugar is allowed under the rules of the challenge. And I cheating I -- want you to know this unhappy fans considering I only consolation. Katie is suffering too. I'm feeling a little listless and lethargic. And a and yes I want a cookie. You know I AM I think -- this -- there are not gonna lighten. As soon as you decide to cut out sugar you very quickly realized. How hard it is to find any product. That doesn't have sugar. Yes my seat for a healthy bread. This morning. And I was so fun to look. One Graham of sugar. Everything yeah -- According to the movies even if the label doesn't say sugar don't beat -- there are 256. Different names -- -- I agree doctor mark -- in featured in the movie that way to a supermarket. You have to learn how to hunting down. Actually it's a market and the best way to do that is to stick around the edges of the supermarkets and don't put -- -- in the house problem processed foods aren't. He says there are 600000. Food items in America. An 80%. Had added sugar. It's very simple if you really bowl and this in the -- you can't pronounce don't recognize it's in Latin -- -- not a real food have to pull back on the shelf and Missouri bar code on this. Right is -- nutrition facts on this. It's a little bit more work than just buying a frozen dinner but Hyman says the trick to going sugar free. Is cooking your own meals. We hate ourselves in this waiting junk food and we have to -- -- -- out of this problem so mood does this mean packages big glut of homemade cookies and cakes -- home apparently. I love dessert and yes and you've taken that away we think we'd love cookies we love -- we'd love cake but. I've got news for you it's not -- its addiction. On an animal studies. They found the shivers -- eight times as addictive as cocaine when they put rats. And eating sugar and little Sugar Bowl -- liquid sugar and with criminal electric shock pat and they shock them while they're in the sugar they keep eating sugar. Even -- while they're getting shocked because it feels that good. -- on the rats in the UR the -- -- -- On day seven -- co anchors on weekend GMA. Are openly taunting me yeah. Stand down the best thing -- ever got to really get presents. Even if you happen to have nicer colleagues. We all live in an ecosystem of near constant temptations bombarded by marketing messages especially kids. On television and even in school. In the movie -- challenges former President Bill Clinton about why the government hasn't done more. T think that government is behind when it comes to helping Americans reduced their sugar intake this undated why why -- I think that. Or why aren't they doing more. I can't answer that. As you might imagine the food industry has not taken kindly to it is moved the Grocery Manufacturers Association arguing that companies. Have aggressively reduced calories that -- -- obesity has actually gone down in recent years. And that the movie just -- gets the facts wrong. Still while critics may take issue with the movies quote vilification of one nutrient pretty much nobody argues that reducing sugar is a bad. This -- nine and dietary freedom is so close second almost taste it. I will admit that I am sleeping a lot better without all the sugar but -- cravings have not diminished one bit. Effect on -- -- home from work -- -- all of these tantalizing deserved place it's feel deprived that felt a lot of very angry KV. And this morning that day after the challenge ended. I went on Good Morning America with Katie realistically you know I think -- will stick with it with a few calculated sugar -- People have asked need did you -- The truth is I did find the boxes Swedish fish my wife had hidden away in the cabinet and migrate -- I had to.

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

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