What is iron-deficiency anemia in children?
Anemia is a common health problem in children. The most common cause of Iron-deficiency anemia is not getting enough iron. A child who is anemic does not have enough red blood cells or enough hemoglobin. Hemoglobin is a protein that lets red blood cells carry oxygen to other cells in the body. Iron is needed to form hemoglobin.
Why is iron important for iron-deficiency anemia in children?
Iron helps move oxygen from the lungs to the rest of the body and helps muscles store and use oxygen. If your child's diet lacks iron, he or she might develop a condition called iron-deficiency anemia.
iron-deficiency anemia in children is a common problem. It can occur at many levels, from a mild deficiency all the way to iron-deficiency anemia — a condition in which blood doesn't have enough healthy red blood cells. Untreated iron-deficiency anemia can affect a child's growth and development.
How much iron do iron-deficiency anemia in children need?
Babies are born with iron stored in their bodies, but a steady amount of additional iron is needed to fuel a child's rapid growth and development. Here's a guide to iron needs at different ages:
Age-Based Hemoglobin Levels in Children and Adolescents
| AGE | MEAN HEMOGLOBIN LEVEL | −2 STANDARD DEVIATIONS | |
|---|---|---|---|
|
Birth (term infant) |
16.5 g per dL (165 g per L) |
13.5 g per dL (135 g per L) |
|
|
1 month |
13.9 g per dL (139 g per L) |
10.7 g per dL (107 g per L) |
|
|
2 months |
11.2 g per dL (112 g per L) |
9.4 g per dL (94 g per L) |
|
|
3 to 6 months |
11.5 g per dL (115 g per L) |
9.5 g per dL (95 g per L) |
|
|
6 months to 2 years |
12 g per dL (120 g per L) |
10.5 g per dL (105 g per L) |
|
|
2 to 6 years |
12.5 g per dL (125 g per L) |
11.5 g per dL |
|
|
6 to 12 years |
13.5 g per dL |
11.5 g per dL |
|
|
12 to 18 years |
|
|
|
|
Males |
14.5 g per dL (145 g per L) |
13 g per dL (130 g per L) |
|
|
|
Females |
14 g per dL (140 g per L) |
12 g per dL |
What causes iron-deficiency anemia in children?
-
Diets low in iron. A child gets iron from the food in his or her diet. But, only a small amount of the iron in food is actually absorbed by the body.
- Full-term newborns, born to healthy mothers, have iron that they get during the last 3 months of pregnancy.
- Infants of mothers with anemia or other health problems may not have enough iron stored. And infants born early may not get enough iron.
- At 4 to 6 months of age, the iron stored during pregnancy is at a low level. And more iron is used as the infant grows.
- The American Academy of Pediatrics (AAP) advises feeding your baby only breastmilk for the first 6 months. But breastmilk does not have a lot of iron, so infants that are breastfed only, may not have enough iron.
- Older infants and toddlers may not get enough iron from their diets.
- Body changes. When the body goes through a growth spurt, it needs more iron for making more red blood cells.
- Gastrointestinal tract problems. Poor absorption of iron is common after some forms of gastrointestinal surgeries. When you eat foods containing iron, most of the iron is absorbed in the upper small intestine. Any abnormalities in the gastrointestinal (GI) tract could alter iron absorption and cause iron-deficiency anemia.
- Blood loss. Loss of blood can cause a decrease of iron. Sources of blood loss may include gastrointestinal bleeding, menstrual bleeding, or injury.
What are the symptoms of iron-deficiency anemia in children?
These are the most common symptoms of iron-deficiency anemia:
- Pale skin
- Irritability or fussiness
- Lack of energy or tiring easily
- Fast heart beat
- Sore or swollen tongue
- Enlarged spleen
- Wanting to eat odd substances, such as dirt or ice
How is iron-deficiency anemia diagnosed in children?
In most cases, anemia is diagnosed with simple blood tests. Routine anemia screening is done because iron-deficiency anemia is common in children and they often have no symptoms.
- The AAP recommends anemia screening with a hemoglobin blood test for all infants at 12 months of age. The screening should also include a risk assessment. This is a group of questions to find risk factors for iron-deficiency anemia. Risk factors include feeding problems, poor growth, and special healthcare needs.
- If the hemoglobin level is low, more blood tests are done.
- If your child has a risk factor at any age, blood tests are done.
- Blood tests for iron-deficiency anemia may also be done during routine physical exam or checkups in children of any age.
Most iron-deficiency anemia in children is diagnosed with these blood tests:
- Hemoglobin and hematocrit. This is often the first screening test for iron-deficiency anemia in children. It measures the amount of hemoglobin and red blood cells in the blood.
- Complete blood count (CBC). A complete blood count checks the red and white blood cells, blood clotting cells (platelets), and sometimes, young red blood cells (reticulocytes). It includes hemoglobin and hematocrit and more details about the red blood cells.
- Peripheral smear.A small sample of blood is examined under a microscope. Blood cells are checked to see if they look normal or not.
- Iron studies. Blood tests can be done to measure the amount of iron in your child's body.
How is iron-deficiency anemia treated in children?
Treatment will depend on your child’s symptoms, age, and general health. It will also depend on how severe the condition is.
To prevent iron-deficiency anemia, the AAP says:
- Beginning at 4 months of age, infants that are only breastfed or partially breastfed should be given a daily iron supplement until they begin eating iron-rich foods.
- Infants that are formula-fed do not need iron supplements. The formula has iron added to it. Whole milk should not be given to infants less than 12 months old.
- Infants and toddlers from 1 to 3 years old should have foods rich in iron. They include cereal that has iron added, red meats, and vegetables with iron. Fruits with vitamin C are also important. The vitamin C helps the body absorb the iron.
Treating iron-deficiency anemia includes:
- Iron supplements. Iron drops or pills are taken over several months to increase iron levels in the blood. Iron supplements can irritate the stomach and discolor bowel movements. They should be taken on an empty stomach or with orange juice to increase absorption. They are much more effective than dietary changes alone. If the child can’t take drops or pills, IV iron may be needed, but this is very unusual.
-
Iron-rich diet. Eating a diet with iron-rich foods can help treat iron-deficiency anemia. Good sources of iron include:
- Iron-enriched cereals, breads, pasta, and rice
- Meats, such as beef, pork, lamb, liver, and other organ meats
- Poultry, such as chicken, duck, turkey, (especially dark meat), and liver
- Fish, such as shellfish, including clams, mussels, and oysters, sardines, and anchovies
- Leafy greens of the cabbage family, such as broccoli, kale, turnip greens, and collards
- Legumes, such as lima beans and green peas; dry beans and peas, such as pinto beans, black-eyed peas, and canned baked beans
- Yeast-leavened whole-wheat bread and rolls
References
1. Iron-Deficiency Anemia in Children | Cedars-Sinai
2. Iron deficiency in children: Prevention tips for parents - Mayo
3. Iron Deficiency and Other Types of Anemia in Infants
See also:
2. What Is Blood Test For Iron Called?
3. 2022 Best Home Hemoglobin Meter Buyers Guide
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6. What main factors influence the hemoglobin test for results?