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Food iron absorption in iron deficiency
The American Journal of Clinical Nutrition
|January 1, 1978
Summary
Dietary iron absorption shows significant individual variability, unaffected by iron intake or specific food groups. Dietary fibers may influence iron absorption, indicated by a negative correlation with fecal dry matter.
Area of Science:
- Human Nutrition
- Gastroenterology
- Hematology
Background:
- Iron is essential for hemoglobin synthesis and oxygen transport.
- Dietary iron absorption is a complex process influenced by various dietary factors.
- Understanding factors affecting iron absorption is crucial for managing iron deficiency.
Purpose of the Study:
- To investigate the relationship between dietary iron absorption and various dietary components in healthy young males.
- To determine the extent of individual variation in food iron absorption.
- To explore potential correlations between iron absorption and dietary habits.
Main Methods:
- Study conducted on 10 healthy young males over 3-5 months.
- Iron absorption quantified by measuring the net increase in hemoglobin mass.
- Dietary intake of iron, animal products, cereals, vegetables, tea, and alcohol recorded.
- Fecal dry substance measured to assess dietary fiber influence.
Main Results:
- Pronounced individual variation in mean dietary iron absorption (1.9–5.0 mg).
- No correlation observed between iron absorbed and iron ingested.
- No significant influence of animal products, cereals, vegetables, tea, or alcohol on absorption.
- Negative correlation found between iron absorption and fecal dry substance.
Conclusions:
- Dietary iron absorption exhibits substantial inter-individual variability.
- Dietary fiber content may play a role in modulating food iron absorption.
- Specific dietary components like animal products or beverages do not appear to consistently influence iron absorption in this cohort.