Fructose is found in everything from soda to cereal. It?s literally in thousands of products. The ?fat carb? has been in our food supply for more 35 years. We?ve been led to believe that fructose from high fructose corn syrup (HFCS) is akin to naturally occurring sugar,

Recently ads hyping high fructose corn syrup (HFCS) for its similarities to sugar are hitting the airwaves. This is part of a major marketing campaign from the Corn Refiners Association meant to combat the bad rap that HFCS has gotten in the past years.

To get that message out, the campaign relies on nutritional research. But CBS News has learned that funding for many of the major studies came from companies with a financial stake in the outcome.

Of the six studies CBS News looked at on the association?s Web site that ?Confirm High Fructose Corn Syrup is No Different From Sugar,? three were sponsored by groups that stand to profit from research that promotes HFCS. Two were never published so their funding sources are unclear. And one was sponsored by a Dutch foundation that represents the interests of the sugar industry.

Pepsi funded one study, so did a D.C. based lobbying group that gets their money from food, chemical and drug companies. And the American Beverage Association gave a grant for another.

One researcher who was involved in three of the studies, Dr. James M. Rippe, a cardiologist and founder of the Rippe Lifestyle Institute says there is no link between HFCS and obesity and calls contrary evidence ?accusations? and ?speculation.? Rippe?s ties with industry are no secret.

Russ Bianchi, a pharmacologist and toxicologist, explains: ?There is no safe form of fructose available from any source, unless already existing in an unprocessed apple or other piece of fruit. The science is known and epidemiologically proven.? For more HFCS facts Click HERE.