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Too Much Iron? Diet May Hold Key
17 Sep
Summary
- Excess iron accumulation can damage organs like the liver and heart.
- Dietary changes may help manage iron absorption, complementing medical treatment.
- Certain foods and drinks, like tea, can reduce iron absorption.
While iron deficiency is a common concern, accumulating too much iron in the body can lead to significant health issues. This overload can cause iron to store in vital organs such as the liver, heart, and pancreas, potentially leading to liver scarring, heart weakening, and diabetes.
My colleagues and I conducted a scoping review of 40 sources, examining the impact of food, drink, and supplements on iron absorption. The findings indicate that dietary modifications can potentially support medical treatments for iron overload, though their effectiveness varies based on the cause of the overload.
Different types of iron overload exist, including inherited forms like hereditary haemochromatosis and secondary overload from conditions like repeated blood transfusions. Understanding these distinctions is crucial for managing the condition effectively.
Certain dietary components can influence iron absorption. For instance, polyphenols found in tea and coffee can reduce the absorption of non-haem iron, the type primarily found in plant-based foods. Conversely, vitamin C enhances this absorption, and alcohol consumption, especially in large amounts, poses a significant risk to liver health.
Currently, there isn't a single defined 'iron overload diet.' However, medical guidance for hereditary haemochromatosis often includes avoiding unprescribed iron supplements and limiting alcohol and red meat. For those with transfusion-related overload, personalized advice from a doctor or dietitian is essential, as diet can support but not replace medical treatment.
