Iron: The Facts

Iron: The Facts

One of the things the body needs for optimal health is minerals. They are used to perform various tasks, from transmitting nerve impulses to building strong bones. This article focuses on one mineral, in particular, iron. Iron plays a crucial role in maintaining good health. Therefore, it is essential to explore this vital mineral and take a look at Iron: the facts.

Minerals help the body grow, develop, and sustain a healthy state. The body uses minerals to carry out many diverse tasks, from building strong bones to transmitting nerve impulses. Some are even used to make hormones or sustain a normal heartbeat. They are essential for optimal health.

What is Iron?

As mentioned above, iron is a mineral. Its primary function is to transport oxygen in the hemoglobin of red blood cells all through the body, enabling cells to produce energy. Iron additionally aids with the removal of carbon dioxide.

Iron also contains myoglobin, a protein that supplies oxygen to muscles. The body additionally requires iron to make certain hormones.

How much Iron do we need?

The amount of iron required daily depends on age, sex, and the type of diet of an individual. Those on a plant-based diet require almost twice that of those on an animal diet. This gap in absorption stems from the body’s inability to absorb iron from plant foods as well as from animal foods.

The table below represents the recommended daily amount of iron needed for various ages and sex.

Life StageRecommended Amount
Birth to 6 months0.27 mg
Infants 7–12 months11 mg
Children 1–3 years7 mg
Children 4–8 years10 mg
Children 9–13 years8 mg
Teens boys 14–18 years11 mg
Teens girls 14–18 years15 mg
Adult men 19–50 years8 mg
Adult women 19–50 years18 mg
Adults 51 years and older8 mg
Pregnant teens27 mg
Pregnant women27 mg
Breastfeeding teens10 mg
Breastfeeding women9 mg

What foods provide Iron?

Iron can be found organically in numerous foods and is added to various enriched food products. Recommended amounts of iron consumed by ingesting an assortment of provisions along with the following:

Iron: The Facts - Foods that contain iron
The top ten Iron Foods
  • Iron-enriched breakfast cereals and bread.
  • Lean meat, seafood, and poultry, including organ meats.
  • Nuts and some dried fruits, such as raisins and apricots.
  • White beans, lentils, spinach, kidney beans, and peas.
  • Dark green, leafy vegetables such as kale, collards, and turnip greens.
  • Nuts and seeds

The iron in food can be found in two forms: heme iron and non-heme iron. Non-heme iron is contained in iron-fortified food products and plant foods. Seafood, meat, and poultry contain both heme and non-heme iron.

The body takes in iron from plant sources better when ingested with seafood, poultry, meat, and foods that contain vitamin C, such as broccoli, citrus fruits, strawberries, sweet peppers, and tomatoes.

Iron Deficiency

When the body does not have enough iron, it cannot produce proper amounts of hemoglobin. When this occurs, tissues and mus**cles do not get ample amounts of oxygen to work effectively. This situation results in a condition known as anemia or iron-deficiency anemia. This kind is the most common type of anemia.

Iron: The Facts - Iron Anemia
Iron Anemia

Signs and symptoms of an iron deficiency differ based on:

  • How severe the anemia is
  • How rapidly it progresses
  • Age
  • State of health

On occasion, individuals experience no symptoms at all.

Below are a few signs and symptoms of an iron deficiency, beginning with the most frequent.


Fatigue or feeling very tired a majority of the time is one of the most usual symptoms of iron deficiency anemia. This symptom can also be found in individuals who do not have sufficient iron, although they have not received a deficiency diagnosis.

This fatigue occurs because the body does not have the iron required to produce the hemoglobin protein that assists in transporting oxygen around the body.

Without sufficient hemoglobin, insufficient oxygen reaches the tissues and muscles, causing them to have less energy. Consequently, the heart has to work harder to move more oxygen-rich blood around the body, causing fatigue (reference).

Given that fatigue and tiredness are frequently a regular part of a busy, modern life, it can be challenging to diagnose iron deficiency with this symptom by itself.

On the other hand, some individuals with an iron deficiency can experience low energy and weakness, irritability, or difficulty concentrating.

Pale Skin

Skin that is fairer than usual and pale coloring inside the lower eyelids is a sign of iron deficiency. It is the hemoglobin that gives blood its red color. Therefore, if the hemoglobin is less than it should be, the blood is a lighter red. This more delicate coloring will cause the skin to lose some redness.

Inside the lower eyelid should be a vibrant red. A pale pink or yellow color can be an indication of an iron deficiency.

This paleness can be seen all over the body or limited to one area such as: the face, gums, nails, inside of the lips, and lower eyelids. However, the lower eyelids may be the only place to notice this symptom for individuals with darker skin. This condition is seen in more moderate and severe cases.

Shortness of Breath

Since oxygen levels are low during an iron deficiency, muscles do not receive enough oxygen to perform everyday activities like walking. Therefore, the breathing rate will increase as the body attempts to get more oxygen. This scenario makes shortness of breath a usual sign.

If an individual finds it difficult to accomplish tasks that used to be effortless, such as walking, exercising, or climbing stairs, it could result from an iron deficiency.


An iron deficiency can bring about headaches, especially in women. Research is being conducted to link estrogen levels, dopamine dysfunction, and iron deficiency.

Headaches stem from many causes, but recurrent headaches can be an indication of an iron deficiency.

Heart palpitations

Irregular heartbeats can be a symptom of an iron deficiency. Since an iron deficiency causes low levels of hemoglobin, this puts an extra load on the heart to pump oxygen throughout the body. This situation can cause the heart to be faster than normal. This condition can lead to a heart murmur, enlarged heart, or heart failure but in extreme cases.

Dry and Damaged Skin and Hair

Whenever skin and hair have insufficient oxygen, they can become dry and weak. In critical situations, this can result in hair loss.

Restless legs

Restless leg syndrome has been connected to iron deficiency. Restless leg syndrome is a strong urge to move the legs while relaxed. Additionally, it can cause crawling and itching feeling in the feet and legs. Usually occurring at night, it can interfere with sleep.

It is not entirely understood what causes restless leg syndrome. On the other hand, research has shown that approximately 25% of individuals with iron deficiency anemia have restless leg syndrome. The incidence of restless leg syndrome is nine (9) times higher in individuals with an iron deficiency when compared with the rest of the population.

Iron: The Facts - Iron Deficiency Symptoms
Iron Deficiency Symptoms

Therefore, individuals with iron deficiency anemia have a greater risk of experiencing restless legs syndrome.

Brittle nails

Brittle or spoon-shaped nail, a symptom of less frequency, is called koilonychia. The first indication of this condition is when nails chip and crack easily. As it progresses, the middle of the nail becomes depressed while the edges rise, resembling the shape of a spoon.

The good news is, this is a rare side effect happening in only 5% of individuals with an iron deficiency and is only seen in acute cases.

Additional more nonspecific signs of an iron deficiency can include odd food cravings, depression, cold hands and feet, and more recurring infections.

Causes of Iron Deficiency

An iron deficiency can be triggered by various factors and can occur at practically any age. Some of the more frequent causes are:

  • heavy blood loss through menstrual periods or internal bleeding
  • inflammatory bowel disease (IBS)
  • insufficient iron intake due to a poor diet
  • raised iron requirements during pregnancy

Additionally, bleeding in the stomach or intestines can be a common reason for anemia in adults that are not menstruating. This bleeding can be caused by:

  • a stomach ulcer
  • bowel or stomach cancer (although this is less common)
  • hemorrhoids
  • taking excessive amounts of nonsteroidal anti-inflammatory drugs, for example, ibuprofen and aspirin

Iron Supplementation

Iron supplements should only be taken if an iron deficiency or the risk for one has been diagnosed by a doctor and diet is not practical.

Iron: The Facts - Supplementation

Iron supplements are available in pill and liquid form and can be purchased in stores and online
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It is important to note that taking iron supplements can cause some side effects, which include:

  • black stools
  • constipation or diarrhea
  • heartburn
  • nausea or vomiting
  • stomach pain

These side effects can be minimized by using a specific type of supplement such as bis-glycinate chelate (reference).

To receive the most effectiveness from iron supplements, do not take them with antacids or milk since they can limit iron absorption.

Avoid or limit high fiber foods or foods containing caffeine since these can interfere with absorption also.

Please feel free to leave any questions, comments, concerns, or experiences with iron below.

Good health!!




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