Diet soda has gone flat with soda drinkers.
Store sales of zero- and low-calorie soda fell almost 7 percent in the past year, The Wall Street Journal reported, citing Nielsen scanner data analyzed by Wells Fargo. Sales of regular soda dropped 2.2 percent.
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Soda consumption in general has been falling over the past few years, however soda remains the most consumed beverage in America, according to Time.
But soda drinkers may be skeptical of diet soda's healthy claims.
A 2011 study conducted by the American Diabetes Association showed that waistlines were larger for diet soda consumers compared to those who drank non-diet soda, as noted by The Huffington Post.
A 2008 University of Minnesota study conducted with 10,000 adults also found that simply drinking one diet soda a day can lead to 34 percent higher risk of metabolic syndrome, according to Today.
And diet cola is also linked to an increased risk for kidney decline, according to a Harvard Medical School study of more than 3,000 women, Today reported.