Bread dietary fiber content

In human diets, leavening of bread and exposure of cereals to wet heat lower the phytate content, increasing zinc avahability. Other factors, such as dietary fiber and a constituent of beans, can also lower zinc intestinal absorption but to a lesser extent. Iron at supplemental dosages (up to 65 mg/day) may decrease zinc absorption so that pregnant and lactating women taking iron may require zinc supplementation, ... 

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