Iron is important to many body processes
• Is an essential element for the body
• Combines with copper and protein to make hemoglobin
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• Hemoglobin is the component of red blood cells which transports
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oxygen from lungs to all body tissues
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• Needed for adenosine triphosphate (ATP) production
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• ATP is required for cellular energy and proper cell function
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• Low iron decreases ATP production; energy levels decrease
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Iron is closely tied to thyroid
• Low levels of thyroid hormone can cause loss of iron
• Sufficient levels of thyroid hormone help the body hold onto iron
• Hypothyroid digestive issues impair absorption of iron
• Low iron reduces conversion of inactive T4 to active T3
• Low iron causes intolerance to T3-containing medication
• With low thyroid, hemoglobin and hematocrit cannot be relied on to
evaluate iron status
Iron testing discussed here
Optimal iron levels discussed here
Supplementing iron
• Test iron before supplementing
• Supplement only if blood tests show a need
• Take iron with vitamin C
• Take iron one hour after or four hours before
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• other medications and supplements
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• phytates (found in whole grains with the germ)
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• oxalic acid (found in high amounts in spinach, Swiss chard,
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• Test iron each four to five weeks while supplementing
• Discontinue iron in supplements and vitamin C five days before testing
Iron supplements are discussed here
Ferritin
• Ferritin is storage iron
• One ferritin molecule encloses up to 4,000 iron molecules
• Low levels of ferritin almost always mean low levels of iron
• Good levels of ferritin must be evaluated with other iron labs
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• Inflammation increases interleukin-6 which increases hepcidin
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• Hepcidin blocks iron release from ferritin and intestinal absorption
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Other factors affecting iron
• Deficiency may involve difficulty converting ferritin to ferrous form
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• May need vitamin B12, B6, folate, copper and/or molybdenum
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• Deficiency of either copper or molybdenum can cause anemia
• Iron deficiency anemia not responsive to treatment associated with
high levels of copper
• If copper elevated, molybdenum usually low
• Ceruloplasmin contains 95% of the copper in plasma
• Ceruloplasmin controls the rate of iron uptake by transferrin
• Copper depletion causes iron to accumulate in the liver because of
decrease in ceruloplasmin oxidase activity
• Copper and zinc compete for uptake
• If supplementing copper, test ceruloplasmin which must rise to
improve low iron
• Lead can bind molybdenum
• Lack of progesterone/excess estrogen can increase copper
Elevated iron levels
• Most common cause is hemochromatosis (usually hereditary)
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• Causes no symptoms early in the condition
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• Symptoms usually appear in middle age in men
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• Symptoms usually appear after menopause in women
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• Genetic testing for C282Y and H63D genes to diagnosis
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• Excess iron can damage organs resulting in
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• heart rhythm abnormalities
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• Tobacco and alcohol increase iron absorption
• Herbs high in iron
• Raw shellfish can contain a bacteria deadly to people with high iron