Blood iron isn't made in the body; instead, it is absorbed from the iron we consume through our diet.
The Body's Iron Source
The human body cannot produce iron; it must be obtained from external sources. Here's how it works:
- Dietary Intake: We acquire iron by consuming foods that contain it.
- Absorption: The body absorbs iron from the food in the digestive system.
- Utilization: Once absorbed, the body uses iron in various biological processes, including red blood cell production.
Dietary Iron: The Main Source
As highlighted in the reference, we must get iron from our diets. The adult minimum daily requirement is 1.8 mg. Only about 10 to 30 percent of the iron you consume is absorbed by your body.
| Requirement | Amount |
|---|---|
| Minimum daily iron | 1.8 mg |
| Absorption | 10% to 30% |
How To Reach Daily Iron Needs
- Food Sources: Consume iron-rich foods like meat, beans, and spinach.
- Iron Supplements: If dietary intake isn't enough, supplements can be used.
- Balanced Diet: A well-balanced diet typically meets iron requirements for most people.
In summary, iron for our bodies, including blood iron, originates from the food we eat and supplements we consume because our body cannot create it.
