Iron Bioavailability and Nutritional Fortification Strategies

Iron deficiency remains the most prevalent micronutrient disorder globally, affecting growth, cognition and immunity. Around two-thirds of dietary iron is non-haem in origin, with absorption modulated by meal composition, enhancers such as ascorbic acid and inhibitors like phytates. Strategies to improve iron status encompass conventional fortification of staple foods, targeted supplementation and emerging biofortification of crops through plant breeding or agronomic practice. Advances in formulation include microencapsulation and protein-ligand complexes that protect iron from oxidative transformations and dietary antagonists. These approaches must balance chemical stability, sensory attributes and cost efficiency to ensure widespread adoption, especially in vulnerable populations. A holistic view of iron physiology, from regulators of intestinal uptake to systemic distribution under the control of hepcidin, informs the design of interventions. Practical applications range from fortified flours and condiments to iron-enhanced animal feed and fortified dairy. Sustainable implementation relies on integrating scientific innovation with local dietary habits, regulatory frameworks and public health policies to reduce the global burden of iron deficiency anaemia.

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Iron Bioavailability and Nutritional Fortification Strategies publication trend

The graph below shows the total number of articles in iron bioavailability and nutritional fortification strategies across all publications each year (not limited to Nature Index journals).

Technical terms

Bioavailability: The proportion of ingested nutrient that is absorbed and available for physiological functions.

Fortification: The addition of vitamins or minerals to processed foods to improve their nutritional quality.

Biofortification: The genetic or agronomic enhancement of crops to increase their intrinsic micronutrient content.

Microencapsulation: A technology that encloses active compounds in a protective matrix to control release and improve stability.

Hepcidin: A hepatic peptide hormone that regulates systemic iron homeostasis by inhibiting intestinal iron absorption and release from stores.

References

1. A Short Review of Iron Metabolism and Pathophysiology of Iron Disorders. Medicines (2019).
2. Comparison Study of Iron Bioaccessibility from Dietary Supplements and Microencapsulated Preparations. Nutrients (2019).
3. Fighting Iron-Deficiency Anemia: Innovations in Food Fortificants and Biofortification Strategies. Foods (2020).
4. Factors Affecting Iron Absorption and Mitigation Mechanisms: A review. International Journal of Agricultural Science and Food Technology (2018).
5. Effectiveness of Dietary Interventions to Treat Iron-Deficiency Anemia in Women: A Systematic Review of Randomized Controlled Trials. Nutrients (2022).