How does vitamin C aid in iron absorption?

Vitamin C plays a vital role in enhancing non-heme iron absorption, which is the form of iron found in plant-based foods and fortified products. It does this by reducing ferric iron (Fe3+) to ferrous iron (Fe2+), which is the more soluble and absorbable form in the acidic environment of the stomach. This reduction increases the bioavailability of non-heme iron, making it easier for the body to absorb and utilize.

Additionally, vitamin C can help form a complex with non-heme iron, which further facilitates its uptake in the intestines. Hence, when foods rich in non-heme iron are consumed alongside foods high in vitamin C, such as citrus fruits or bell peppers, the overall absorption of iron is significantly improved, thus supporting overall iron status and preventing issues such as anemia.