

Today, we’re taking a closer look at one very important nutrient: iron.
In this article, our family dietitians explain what parents need to understand about iron deficiency in young children, and how to prevent it.

Iron deficiency is one of the most common causes of anemia. It reduces oxygen transport to tissues, impairing normal function. This typically occurs when a child does not consume enough iron-rich foods.
In 2019, the prevalence of anemia among Canadian children under five years old was 13.2%. Iron is therefore a nutrient that deserves particular attention in early childhood.
Around 6 months of age, babies’ iron stores, built during the third trimester of pregnancy, begin to decline. Breast milk alone can no longer meet their iron needs. Fortunately, this is also when solid foods are introduced, making it the ideal time to replenish iron stores and support your child’s rapid growth.
Between 6 and 12 months, babies grow at an extraordinary pace, and their iron requirements increase accordingly. Interestingly, their digestive system is also highly efficient at absorbing iron during this stage.
After age one, iron needs decrease slightly, then increase again between ages 4 and 8.
In short, iron requirements follow a child’s growth spurts.
| Age | Recommended Iron Intake (mg/day) |
| 7–12 months | 11 mg |
| 1–3 years | 7 mg |
| 4–8 years | 10 mg |

Iron deficiency develops gradually. Symptoms often appear only once deficiency is already established.
Still, parents should stay alert for signs such as:
Iron deficiency should not be ignored. In more severe cases, it can weaken the immune system and impair growth.
Long-term deficiency may also affect brain development, increasing the risk of anxiety, depression, or attention difficulties during adolescence.
Iron deficiency does not occur overnight. It develops in three progressive stages.
In the first two stages (often referred to as pre-anemia), iron stores become depleted and iron transport decreases. Lab results may show:
When deficiency progresses to the third stage, iron-deficiency anemia develops. Lab results then show:
Hemoglobin is a protein found in red blood cells. Iron is an essential component of hemoglobin because it binds oxygen for transport from the lungs to organs throughout the body.
Reduced oxygen delivery explains many of the symptoms listed above.

Children following a vegetarian diet can absolutely meet their iron needs, but it requires thoughtful planning.
Animal-based foods contain heme iron, which is more easily and efficiently absorbed.
Plant-based foods such as legumes, tofu, and iron-fortified infant cereals contain non-heme iron. Because of structural differences, non-heme iron is less readily absorbed.
The good news? Absorption can be significantly improved by pairing plant-based iron sources with vitamin C-rich foods.
For example:
If you need help planning balanced vegetarian meals for your child, consulting a family dietitian can provide clarity and reassurance.
It’s completely normal to worry about your child’s health, especially when it comes to growth and development.
You may benefit from professional guidance if:
Premature infants have less time to build iron stores before birth, increasing their risk of deficiency after delivery.
Sometimes, even one consultation is enough to provide practical, personalized tools.

Between 6 and 12 months, it is recommended to offer iron-rich foods at least twice daily. A practical strategy is to include an iron source at each meal and to vary sources regularly.
Here are practical ways to boost iron intake:
Additional helpful strategies:
Iron supplementation should always be discussed with a physician. Iron supplements should not be given preventively without medical supervision, as excessive iron can be toxic for children.If you’d like personalized support or have concerns about your child’s nutrition, booking a free discovery call with our team can be a helpful first step.
Meet Alyssa, the founder of Family Dietitians. We are a trusted online clinic of dietitians and nutritionists that focuses on fertility, pregnancy, postpartum, breastfeeding, pediatrics, and family support. We provide online consultations in Canada and the United States.





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