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Does calcium interfere with iron absorption?

Question:
Is it true that calcium interferes with iron absorption? Is it a problem to take a multivitamin containing both minerals?

Answer:
Taking calcium can inhibit iron absorption by as much as 62%, but this depends on the dose of calcium. This interaction is of greatest concern for younger women, as they are the most likely to suffer iron deficiency. For more details about this interaction and how to avoid or minimize it, and about other minerals and foods that can inhibit iron absorption, see the "What to avoid when taking" section of the Iron Supplements Review >>

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Learn more about iron and calcium:



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This CL Answer initially posted on 11/18/2017.

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