When We Obtain Calcium from a Dietary Supplement,the Absorption of Magnesium

question 31

Multiple Choice

When we obtain calcium from a dietary supplement,the absorption of magnesium and copper from food may be reduced because

• A)calcium interferes with the digestion of trace minerals.
• B)magnesium and copper both have the same valence as the calcium,so there is competition for absorption sites.
• C)excess calcium can destroy the villi of the intestinal tract.
• D)excess calcium means the magnesium and copper cannot be solubilized in water.

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