• USA Today/AP, Monday, April 30, 2007 11:30 AM

KFC and sister brand Taco Bell announced today that all of its U.S. restaurants have stopped using artery-clogging trans fat. KFC said in October that it was switching to a new soybean oil; all single-brand Taco Bells have been converted to a canola oil. Multibrand locations will issue the soybean oil, the fast-food chain says.

KFC is unveiling TV advertising today to promote its switch. Stores will put up signs touting the conversion, and its chicken buckets will be stamped with a banner proclaiming that its chicken has zero grams of trans fat per serving within a week or two. The two chains are subsidiaries of Louisville-based Yum Brands, whose brands also include Pizza Hut, Long John Silver's and A&W All-American Food Restaurants.

The announcements come amid a national push to rid diets of trans fat. Other companies including Wendy's International Inc., Starbucks Corp., McDonald's Corp. and Burger King Holdings Inc. have also said they will phase out trans fat from their products.

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