By the end of 2013, Mars says it will shave 30 calories, or about 11 percent (approximated here), off the current version of the Snickers bar.
February 15, 2012 Candy-maker Mars says it's setting a 250-calorie limit for all of its candy bars. That means a regular Snickers bar will lose 30 calories and the king-size bar will be no more.
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