Candy maker Mars said that by the end of 2013, it will stop selling chocolate, including Snickers bars, with more than 250 calories, effectively ending king-size products. Not all of the company's candy will be affected, but Mars said it wants to focus on "reasonable snacking."

Spokeswoman Marlene Machut said the plan to stop shipping any chocolate product that exceeded 250 calories per portion by the end of 2013 -- a target first announced last fall -- was part of Mars' "broad-based commitment to health and nutrition."

READERS: Are you more likely to buy a Mars candy bar knowing they will have fewer calories?

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