Briefly elaborate on the factors affecting absorption of calcium and iron in the body.
Foods
Foods that interfere with calcium absorption include spinach, collard greens, sweet potatoes, rhubarb, whole grains, seeds, nuts, soy isolates and beans. These foods contain phytic acid and oxalic acid which is found in some plants. Phytic and oxalic acid bind to the calcium and prevent it from being absorbed into the body. According to the National Institutes of Health Office of Dietary Supplements, polyphenols and phytates which are found in legumes and whole grains can decrease the absorption of iron. Soybean can also inhibit the absorption of iron because of certain proteins that are found in soybeans.
Beverages
Caffeine and alcohol can also affect how much calcium is absorbed into the body. Caffeine
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