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Diet rich in calcium tied to lower cancer rate

CHICAGO - A study in nearly half a million older men and women bolsters evidence that diets rich in calcium may help protect against some cancers.

The benefits were mostly associated with foods high in calcium, rather than calcium tablets.

Previous studies have produced conflicting results. The new research involved food questionnaires from participants and a follow-up check of records for cancer cases during the subsequent seven years. This research method is less rigorous than some previous but smaller studies.