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The Role Of Iron In The Human Body

Updated: Sep 16, 2022

Iron is a mineral that the body needs for growth and development. Your body uses iron to make hemoglobin, a protein in red blood cells that carries oxygen from the lungs to all body parts, and myoglobin, which provides oxygen to muscles. Your body also needs iron to make some hormones. If you don't get enough iron from your diet, you may have symptoms of anemia. This can include feeling weak or tired or having trouble breathing. The most reliable sources of dietary iron are animal products such as organ meats (liver), beef (especially ground beef), chicken, and turkey. Nuts, beans, vegetables, and grains also contain some iron, but the amount depends on the mineral content of your soil. Some foods are excellent sources of non-heme iron (which makes up about 20 percent of the iron in foods) - dried fruit and seaweed (for example).

What does iron do for the body?

Iron is a mineral that plays a vital role in your body's work.

Iron is an essential element, meaning it's needed for your body's average growth and development, but your body can't make it. You must get iron from food or supplements.

Iron helps maintain red blood cells, which carry oxygen to the tissues of your body. Iron also helps maintain energy levels and contributes to normal cognitive function.

Iron deficiency is the most common nutrient deficiency in the world.

iron deficiency symptoms

Iron deficiency is one of the most common nutritional deficiencies in the world. The body needs iron to make hemoglobin, a protein in red blood cells that carries oxygen around the body.

Iron deficiency can cause anemia, which means having too few red blood cells or having less than average hemoglobin in your blood. Anemia can cause weakness, shortness of breath, pale skin, and dizziness.


The most common symptom of iron deficiency is fatigue or exhaustion. Other symptoms include:

  • Pale skin

  • Rapid heart rate (tachycardia)

  • Restlessness or irritability

  • Dizziness when standing up quickly

What causes iron deficiency?

The leading cause of iron deficiency is blood loss from heavy periods, persistent diarrhea, or other gastrointestinal disorders such as celiac disease, Crohn's disease, and ulcerative colitis. In addition, many women lose iron during pregnancy because their bodies make additional amounts to support fetal growth and development. Women who do not consume enough dietary sources of iron are also at risk for iron deficiency anemia.

In addition to these common causes of iron deficiency, certain conditions may increase your risk of developing iron deficiency anemia:

Blood donation: People who donate blood regularly can become iron deficient because they lose iron each time they give blood. Menstruating women who donate blood may also be at risk of developing low levels of hemoglobin because their menstrual cycle can interfere with their ability to absorb

What are the five benefits of iron?

The human body contains about 4 grams of iron, about 2 percent of a person's total body weight. Iron is an essential metal that helps carry oxygen through the bloodstream to the cells in your body.

Iron deficiency is one of the most common nutritional deficiencies worldwide, especially in developing nations where people do not get enough dietary iron.

What are the five benefits of iron?

1. Iron helps transport oxygen throughout your body

2. Iron plays a vital role in energy production and enzyme activity

3. Iron maintains healthy skin and hair

4. Iron helps prevent anemia (a lack of red blood cells) and other blood disorders

5. You need iron to make new red blood cells

Is it reasonable to take iron pills every day?

If you eat a balanced diet that includes meat, poultry, fish, and other sources of iron (such as beans), you probably don't need to take an iron supplement unless you are pregnant or breastfeeding (during these times, your body needs extra iron). Suppose you don't eat enough red meat or other animal products or have certain medical conditions. Your doctor might recommend taking an iron supplement with meals to help prevent or treat anemia.

What happens when you start taking iron?

When you start taking iron, you may notice some mild side effects. These can include:

Nausea and vomiting


Stomach cramps




Does iron give you energy?

Iron helps your body produce hemoglobin and myoglobin. Hemoglobin carries oxygen from your lungs to every cell in your body—myoglobin stores oxygen for use by muscles during exercise or physical activity. So if you lack iron, you might feel tired because your muscles aren't getting enough oxygen for energy production.

Iron deficiency is common among women who have heavy periods since blood loss causes iron loss from the body. Pregnant or breastfeeding women may also develop low levels of iron due to increased demand for this mineral during those periods when they may not be getting enough dietary sources of iron into their diets.

Is iron good for the skin?

Iron plays a vital role in wound healing by stimulating collagen synthesis and angiogenesis. Collagen is a protein in connective tissue that supports skin elasticity by providing strength and flexibility. Angiogenesis is the formation of new blood vessels from pre-existing ones — this process allows for increased circulation, which promotes healing.

Is iron good for hair growth?

Iron plays a role in the production of hemoglobin, which is responsible for transporting oxygen throughout the body. It also helps to produce melanin, which gives hair its color and protects it from sun damage.

Do iron pills make you sleepy?

Iron supplements often cause drowsiness, especially if taken with coffee or tea. If you feel sleepy after taking a dose, reduce your intake by half for a few days and see if this helps. If it doesn't, try taking the supplement earlier in the day when caffeine won't interfere with your sleep cycle.

How much iron can I take a day?

It's best to get your iron from food sources, but if you need supplementation, it's essential to take the correct dose. The recommended daily allowance (RDA) for iron is 8 mg for adults ages 19 to 50 and 18 for those 51 and older.

What happens if I take too much iron?

Too much iron can cause nausea, vomiting, and diarrhea. In rare cases, it can also lead to liver and kidney damage. If you think you might have overdosed on iron supplements, seek medical attention immediately.

How do I know if my iron is low?

The most common symptoms of low iron are fatigue, weakness, and dizziness. You may also have joint pain or anemia (which causes a lack of oxygen in your blood). If you think you're suffering from iron deficiency, talk to your doctor about getting tested.

Does iron cause weight gain?

While it's true that iron can cause weight gain, it's not because of fat. The main culprit is fluid retention, which causes edema (swelling). Too much iron in your system binds with oxygen in red blood cells and carries it throughout the body. When your body doesn't need as much oxygen anymore, the extra iron gets stored as a protein called ferritin. In layman's terms: More iron means more ferritin, which means more water in your tissues.

Does iron make you look younger?

Yes. If you have enough iron in your diet, it helps your body's cells produce more energy. This can help your skin stay more elastic and reduce wrinkles.

Does iron make collagen?

Yes. Collagen is the protein in connective tissue that gives skin elasticity and strength. Iron helps make collagen, so the more iron you have in your system, the more collagen you can produce. It also helps your body repair itself after injury or surgery by speeding up cell regeneration.

Does iron boost metabolism?

Yes. Your metabolism is the rate at which your body converts food into energy. If you have low iron levels, less oxygen gets to your cells, and they can't produce as much energy as they should be able to. This causes your body to slow down its metabolism to conserve energy.

What food is highest in iron?

Some of the best sources of iron are lean meats, chicken liver, poultry, and fish. Other good sources include beans, lentils, and leafy greens (spinach and Swiss chard). To get the most out of your meals, combine these foods with vitamin C-rich foods like oranges or strawberries. This will help your body absorb more iron from your food.

Why is my body not absorbing iron?

There are many reasons why your body may not be absorbing iron. You may have an infection that has damaged your stomach lining, or you could have been taking certain medications that reduce the amount of iron your body can absorb (such as tetracycline). If you suspect this is the case, ask your doctor to test for low iron levels.


The best way to ensure you get enough iron is to eat various foods containing it. It's also essential to ensure you're eating enough calories from food rather than relying on supplements or drinks that claim to provide "energy without the sugar."

If you're unsure about your diet or want to ensure that you're getting enough iron, talk to your doctor. They can help determine if any other issues may be causing your low levels simultaneously as treating them.

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