Diet Soda Sales Go Flat

America's love for diet soda may be fading as sales decline.
3:00 | 12/09/13

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Transcript for Diet Soda Sales Go Flat
Thank you so much, rich. We like to tell you about trends and changing tastes in america, and tonight a sign the diet soda craze may be losing its fizz. Abc's david wright looks at a sign of the times and what we're drinking instead. ♪ Tab cola ♪ Reporter: Back in the 80s and 90s DIET SOFT DRINKS LENT NEW Fizz to the soda wars. Featuring the greatest athletes and the sexiest super models. Some things never change. Reporter: But some do. America's love affair with diet soft drinks may have lost its pop. For nine straight years sales have been dropping. For the past three the dropoff in diet soda has been steeper than regular soft drinks. Zero and low calorie beverages down nearly 7 percent this year. Regular soda down two percent. We used to drink regular and then say, I'm drinking diet. It's fine. But the reality is these days we're becoming a little bit of a confession in my office where i eat generally okay but I have to confess, I drink diet soda. Reporter: Drinking sugar free soda does not guarantee weight loss. One study found that test subjects who drank two or more diet soft drinks a day had their waist lines grow five times faster. True confessed, did you ever drink this stuff? I did. When I was in graduate school i drank it and then I quit. Now I won't even sip it because I'm afraid I'll like it and get back to it. Reporter: The american beverage association said us our industry sees growth. The biggest growth these days is energy drinks and good old fashioned water, pure and simple. David wright, abc news, l.A. And right here on "world

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

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