Effects

• A U.S. Department of Agriculture study found that the component casein (a protein containing phosphoric acid) in cow's milk inhibits iron absorption.
  
  

Identification

• Polyphenols are substances in caffeine, tea and coffee that interferes with iron absorption.
  
  

Considerations

• Insufficient iron absorption is also linked to the phytates found in whole grains, nuts and legumes. Excessive consumption of antacids interferes with the body's ability to metabolize iron.
  
  

Prevention/Solution

• Taking iron pills on an empty stomach will ensure optimal absorption, and consuming foods containing vitamin C may further increase absorption.
  
  

Causes

• Needing an iron supplement is a result of poor nutrition or an increased demand for the nutrient during pregnancy, rapid growth or blood loss.
  
  

Warning

• Inadequate levels of iron can lead to anemia, which requires treatment. Symptoms include fatigue, pale skin, unusual cravings, poor appetite, cold hands or feet, headaches and dizziness.