Of all the nutrients to think about when starting solids, iron is the one experts flag most often. Babies are born with a store of iron that begins to run low around six months — right when solids begin. Getting enough iron from food matters for healthy growth and brain development, which is why so many "first food" recommendations are iron-rich by design.
Why is iron so important for babies?
Iron helps carry oxygen around the body and plays a key role in brain development during this rapid period of growth. Babies build up an iron store before birth, but by about six months that supply naturally depletes — and breast milk, while wonderful, is relatively low in iron.
That's why solids introduced around six months should include iron-rich foods regularly. Low iron in infancy is common, and it's one of the main nutritional reasons solids are recommended at this age rather than later.
The best iron-rich first foods
There are two types of dietary iron, and offering a mix of both is ideal:
Heme iron (from animal foods — easily absorbed)
Non-heme iron (from plant foods)
Your body absorbs non-heme (plant) iron much better when it's paired with vitamin C. So serve iron-rich plant foods alongside a little fruit or veg — think lentils with tomato, or iron-fortified cereal with a few soft strawberries. A simple pairing that makes the iron work harder.
A few practical tips
- Offer iron-rich foods most days. It's not about one big iron meal — it's about regular exposure across the week.
- Pair plant iron with vitamin C (berries, citrus, tomato, bell pepper) to boost absorption.
- Go easy on cow's milk as a drink. Large amounts of cow's milk before 12 months can interfere with iron absorption. Small amounts in cooking or yogurt are fine, but cow's milk isn't recommended as a main drink in the first year. (See our guide to introducing allergens, including dairy.)
- Keep textures safe. Meats can be pureed, finely minced, or offered as soft strips depending on your approach — just make sure they're age-appropriate and not a choking hazard.
How much iron does my baby need?
Iron needs are highest in the second half of the first year. Rather than counting milligrams at every meal, focus on including an iron-rich food regularly and pairing it with vitamin C. If you're ever worried your baby isn't getting enough — or you're raising them on a vegetarian or vegan diet — your pediatrician can advise and check iron levels if needed.
Keep reading: Starting solids: a complete guide · Introducing allergens safely
This article is for general information and isn't medical advice. If you have concerns about your baby's iron levels, growth, or diet — especially with a vegetarian or vegan diet — please speak to your pediatrician or a registered dietitian.