Study Warns About Possible Cancer Link in Soda

Dr. Richard Besser discusses a Consumer Reports study about a chemical found in sodas.
3:00 | 01/23/14

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Transcript for Study Warns About Possible Cancer Link in Soda
We have a hurt alert about soda and cancer. "Consumer reports" is out saying a chemical that causes tumors in mice can reach dangerous levels in our most popular drinks. Richard Besser with details. What is the chemical? The chemical is called 4mei and it's a by-product -- process used to make the caramel coloring that turns our sodas brown. Some feel that high levels of this can cause tumors. High levels in mice have been shown to cause lung cancer. California was concerned enough that they've set a level for this. Now, consumer reports said some of the levels were high. In which sodas? They said that Pepsi, Pepsi's 1 and Goya's -- multigoya had the highest level. Pepsi said they're in compliance with the law, that you would have to drink much more of this soda than people consume to cause a problem. And the fda, the feds have not found that this is a dangerous chemical. It's hard. We really have to go with animal studies to look at risk. The fda says the current consumption is not an issue. You would have to drink thousands of cans a day to reach the levels that the mice were getting. You still think soda is a problem. Yeah, I don't recommend that people drink a lot of soda. You have an occasional soda, it doesn't party which one you have. You'll be fine. Water, bubbly or flat, the best way to G another reason if you're concerned go for those. Now to Courtney love giving

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

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