No more than 4, 000 IU of vitamin D should be consumed daily and no more than 2, 000 mg of calcium.

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Half made no change in their diets, while the other half increased calcium from low-fat dairy foods to about 1500 milligrams a day.

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It sold Viactiv brand calcium chews for an undisclosed amount last year, and launched a natural, no-calorie sweetener called Nectresse in the U.S. last summer.

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