Explain about the Bioavailability of Minerals?

Polyphenols can form complexes with metal cations through their carboxylic or hydroxylic groups, and thus interfere with the intestinal absorption of minerals like iron, copper, sodium and aluminum. The important negative interaction in the Indian setting is the iron absorption vs. polyphenols, as Indian diets are deficient in iron. In view of the impact of polyphenols on the metabolism of several macro and micro nutrients, research has been carried out to explore their potential in the treatment, management and prevention of various diseases.