Which nutrient enhances non-heme iron absorption and can improve iron status when consumed with iron-rich foods?

Which nutrient enhances non-heme iron absorption and can improve iron status when consumed with iron-rich foods?

• A. Vitamin C (ascorbic acid)
• B. Vitamin D
• C. Vitamin B12
• D. Calcium

Answer: (A)

Vitamin C enhances non-heme iron absorption by acting as a reducing agent that converts ferric iron (Fe3+) to ferrous iron (Fe2+), and by forming a soluble iron-ascorbate complex that remains available for uptake in the intestine. This helps iron-rich, plant-based foods supply more usable iron, improving iron status when eaten together. The other nutrients don’t have this effect: vitamin D supports calcium metabolism, vitamin B12 is involved in red blood cell production, and calcium can actually interfere with iron absorption when consumed with iron-containing meals.

Vitamin C enhances non-heme iron absorption by acting as a reducing agent that converts ferric iron (Fe3+) to ferrous iron (Fe2+), and by forming a soluble iron-ascorbate complex that remains available for uptake in the intestine. This helps iron-rich, plant-based foods supply more usable iron, improving iron status when eaten together. The other nutrients don’t have this effect: vitamin D supports calcium metabolism, vitamin B12 is involved in red blood cell production, and calcium can actually interfere with iron absorption when consumed with iron-containing meals.