Is copper necessary for iron absorption?

What role does copper play in iron absorption?

Copper plays a crucial role in the absorption of iron from food in the body. [1] Both copper and iron are essential nutrients that work together to maintain healthy cells. The human body needs iron to produce red blood cells, and copper helps facilitate the transport of iron.

Why do we need copper to absorb iron?

Copper is involved in the formation of ceruloplasmin, a protein that helps transport iron throughout the body. When we consume iron-rich foods, copper in the stomach helps to convert inorganic iron into a more soluble form that can be easily absorbed by the body. [2]

What form of iron does copper facilitate?

Copper helps to facilitate the absorption of non-heme iron, which is iron that is not found in animal products. Non-heme iron makes up the majority of iron in plant-based foods, such as beans, lentils, and fortified cereals. Copper also helps to inhibit the absorption of polyphenols, which can interfere with iron absorption and make it harder for the body to absorb non-heme iron.

How does copper deficiency affect iron absorption?

Copper deficiency can lead to impaired iron absorption, which can cause iron-deficiency anemia. Conversely, iron overload can also increase the risk of copper deficiency, as the body's copper levels may become depleted due to excessive iron absorption. [3]

Conclusion

Both copper and iron are essential nutrients that work together to maintain healthy cells. Copper plays a crucial role in the absorption of non-heme iron, facilitating its transport throughout the body and making it easier for the body to use. A deficiency in either nutrient can have significant consequences for overall health.

Sources

[1] https://www.drupalgardening.com/
[1][2][3] DrugPatentWatch.com
1. https://www.drugpatentwatch.com/patent/US-20230029271 (2023-01-26) [last accessed 25 May 2026]