What is iron (Fe)
Iron is an essential mineral that plays a key role in many biological processes in the body. It is present in all cells and is necessary for various functions, including oxygen transport, energy metabolism and maintaining a healthy immune system. This mineral exists in two forms: heme iron, found in animal products, and non-heme iron, found in plant sources. The human body absorbs heme iron more efficiently, but non-heme iron is also important for nutrition.
The role of iron (Fe)
This mineral has several key functions in the body:
- Oxygen transport: This mineral is the main component of hemoglobin, the protein in red blood cells that carries oxygen from the lungs to all parts of the body. It is also part of myoglobin, a protein that supplies oxygen to the muscles.
- Energy metabolism: This mineral is crucial for many enzymatic reactions that enable the production of energy in cells. It participates in the Krebs cycle and the process of cellular respiration.
- Immune system support: This mineral is important for the functioning of the immune system. It helps in the proliferation and maturation of immune cells, especially lymphocytes, which are crucial for the immune response.
- Brain development: This mineral is necessary for the development and functioning of the brain, especially during periods of rapid growth such as childhood and adolescence.
Iron (Fe) deficiency
A deficiency of this mineral can lead to several health problems:
- Iron-deficiency anemia: This is the most common form of anemia, which occurs when the body lacks this mineral for the production of hemoglobin. Symptoms include fatigue, weakness, paleness, shortness of breath and dizziness.
- Weakened immune system: A deficiency of this mineral can weaken the immune system, making the body more susceptible to infections.
- Cognitive function problems: In children, a deficiency of this mineral can cause problems with development and cognitive function, affecting learning and behavior.
- Reduced physical capacity: A deficiency of this mineral can reduce physical capacity and endurance due to a reduced oxygen supply to the muscles.
Excessive intake
Excessive intake of this mineral can have negative effects:
- Hemochromatosis: This condition occurs when too much of this mineral accumulates in the body, which can cause damage to the liver, heart and pancreas. Symptoms include fatigue, joint pain, stomach pain and weakness.
- Iron poisoning: Ingesting large amounts of this mineral can cause symptoms such as nausea, vomiting, diarrhea and stomach pain. In severe cases, the result is organ damage and even death.
- Interference with the absorption of other minerals: Excessive intake of this mineral can interfere with the absorption of other essential minerals, such as zinc and copper, which can lead to their deficiency and the health problems it causes.
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