Created: 10/18/2013 7:22 AM WHEC.com
The country's number two soft drink may be losing some of its fizz.
Coca-cola officials are worried about sales of Diet Coke because of consumer concerns over its ingredients.
Sodas have come under fire in recent years from health advocates and consumers over the amount of sugar used in them. And diet drinks, like Diet Coke, are feeling the strain.
Last year, sales of Diet Coke fell three percent. Sales of full calorie Coke rose two-percent while sales of Coke Zero, made with artificial sweeteners, jumped five-percent.