Iron absorption inhibitors

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Absorption of iron in our diet may be inhibited by some substances. These iron absorption inhibitors are usually found in foods and drinks. Some medications also reduce the assimilation process of iron in the digestive system.

Here are a list of inhibitors of iron absorption.

• Tea and coffee
• Chocolate
• Soy products
• Almond nuts
• Brazil nuts
• Large amounts of zinc in the diet
• Large amounts of manganese
• Calcium supplements
• Antacids and other peptic ulcer medications

Tea, coffee and chocolate contain tannins that are chemical substances found in many plants. Tannin makes insoluble molecular complexes with non heme iron, making it harder to digest.A research article published in An International Journal of Gastroenterology and Hepatology says drinking tannin containing beverages such as tea with meals may contribute to the development of iron deficiency anemia.
Soy, almonds and Brazil nuts contain phytate which is a strong inhibitor of iron absorption. Researchers found that phytic acid is a major contributor of reduced iron absorption from soy products.
Related article:Iron absorption enhancers.