Why does the human body need iron?

In summary, Iron is primarily used in many enzymes as a metal complex. However, it also has biological uses, such as its presence in hemoglobin, a protein that binds oxygen and transports it around the body. The iron in hemoglobin forms a complex with heme porphyrin. Although it may not directly catalyze reactions, there are other iron-porphyrins that do. Additionally, enzymes are also proteins, but hemoglobin itself is not an enzyme. This should answer the question about any other biological uses for iron.
  • #1
Chaos' lil bro Order
683
2
As far as I know Iron is used in many enzymes as the metal complex. Beyond this are there any biological uses for iron? All uses appreciated, ty.
 
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  • #2
here the most prominent example i know of is its presence in haemoglobin, a protein that makes use of iron to bind oxygen and transport it around the body
 
  • #3
Chaos' lil bro Order said:
As far as I know Iron is used in many enzymes as the metal complex. Beyond this are there any biological uses for iron?

Nope. Complexes are pretty much all iron does. The above poster's example of hemoglobin is an example of an iron complex.
 
  • #4
ShawnD said:
Nope. Complexes are pretty much all iron does. The above poster's example of hemoglobin is an example of an iron complex.

Yes, but hemoglobin is a protein, not an enzyme, so his post is a valid example of another use of iron.

Incidentally, have you ever noticed that if you smell your finger after picking at a scab with a little blood on it, that is smells strongly like iron?
 
  • #5
Yes, but hemoglobin is a protein, not an enzyme, so his post is a valid example of another use of iron.

But the iron is still acting through forming a complex - in this case, it is actually a heme porphyrin. The fact that the iron isn't performing a reaction is a mere technicallity - there are many iron-porphyrins that DO catalyze reactions.
 
  • #6
Chaos' lil bro Order said:
Yes, but hemoglobin is a protein, not an enzyme, so his post is a valid example of another use of iron.

Enzymes are proteins too. But hemoglobin is not an enzyme. Regardless, I think you've gotten the answer you were seeking, correct?
 
  • #7
Do I have to draw a Venh Diagram, I'd rather not.
 

1. Why is iron important for the human body?

Iron is a crucial mineral that plays a vital role in various bodily functions. It is an essential component of hemoglobin, a protein in red blood cells that carries oxygen from the lungs to the rest of the body. Iron is also necessary for the production of myoglobin, a protein that helps store oxygen in muscles. Additionally, iron helps with the production of certain hormones and enzymes that are important for growth and development.

2. What happens if the body does not have enough iron?

When the body does not have enough iron, it cannot produce enough hemoglobin, leading to a condition called anemia. Anemia can cause fatigue, weakness, shortness of breath, and difficulty concentrating. In severe cases, it can also affect heart function and lead to complications during pregnancy.

3. How much iron does the human body need?

The recommended daily intake of iron varies depending on age and gender. Adult men need around 8 mg of iron per day, while adult women need 18 mg per day. Pregnant women have a higher requirement of 27 mg per day. It is essential to consume enough iron-rich foods or take supplements to meet these requirements.

4. Can the body get too much iron?

Yes, the body can get too much iron, which can be harmful. The body has a limited ability to excrete excess iron, so it can build up in organs and tissues, leading to a condition called iron overload or hemochromatosis. This can cause damage to the liver, heart, and pancreas. It is crucial to consult a doctor before taking iron supplements to avoid consuming too much iron.

5. What are the best sources of iron?

Iron can be found in both animal and plant-based foods. The best sources of iron include red meat, poultry, fish, leafy green vegetables, dried fruits, beans, and fortified cereals. These sources contain heme iron, which is more easily absorbed by the body. Non-heme iron, found in plant-based foods, may not be as well absorbed, but consuming it with vitamin C-rich foods can help enhance absorption.

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