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Steady accumulation of evidence confirms that iron deficiency limits physical performance, reduces work productivity and impairs cognitive/thought processes.
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In children iron deficiency leads to lower mental development scores, short attention span, unhappiness and increased fearfulness and tension.
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Rapid periods of growth require extra iron. At 6 – 12 months weight is tripled and iron content is doubled. From 1 – 6 years iron requirements are doubled again. In adolescence iron requirements are high due to rapid growth in puberty.
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People with gastro-intestinal problems are more prone to iron deficiency, due to poor absorption of iron.
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The elderly are prone to iron deficiency due to reduction of hydrochloric acid in the stomach and poor dietary intake.
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Those who engage in regular strenuous exercise may require up to 30% more iron.
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Iron is a key nutrient in the synthesis of melatonin and serotonin.
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Women have four times more active iron transport sites in the intestinal tract than men.
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Supplementation with high doses of elemental iron depletes the absorption of zinc.
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