What are the best first foods for a baby's brain development?
Make the first foods iron-rich: soft meat, well-cooked egg, lentils, beans or tofu, and iron-fortified oat, barley or multigrain cereal. CDC advises starting solids around 6 months, not before 4, with iron foods first. Well-cooked eggs and low-mercury fish bring choline, DHA and iodine. Serve plant iron with a vitamin C food to help absorption.
On this page
When to start solids
CDC recommends starting solid foods around 6 months, and not before 4 months. Watch your baby, not the calendar. Signs your baby is ready:
- They sit up, with or without support.
- They control their head.
- They open their mouth for food and bring things to their mouth.
- They swallow food rather than pushing it back out.
Breast milk or formula is still the main food for a while. Solids add to it. If your baby has severe eczema or a known food allergy, talk to your pediatrician before you start.
Step by step
- Check readinessLook for sitting with or without support, good head control, opening the mouth for food and swallowing rather than pushing food out.
- Start with ironOffer a smooth iron-rich food first: pureed meat, mashed well-cooked egg, soft lentils or iron-fortified oat cereal.
- Pair plant iron with vitamin CServe lentils, beans, tofu or cereal with berries, tomato, broccoli or sweet potato.
- Add one new food at a timeWait 3 to 5 days between new single-ingredient foods so you can spot a reaction.
- Follow your baby's cuesStop when your baby turns away or keeps their mouth shut, and talk and name foods throughout the meal.
Iron first, and why it matters for the brain
Your baby's brain is growing fast this year, and it's built from food: fat for the myelin that coats nerve fibers, iron for wiring and chemical messengers, iodine for the thyroid hormones that steer brain growth. Babies are born with an iron "pantry," topped up at birth if the cord was clamped late. By around 6 months, that pantry needs refilling from food. CDC advises starting with solids that contain iron at around 6 months.
Why the fuss? In long-term studies led by Betsy Lozoff, young adults who had chronic, severe iron deficiency as babies did worse at age 19 on tests of planning, memory and self-control. Those studies were observational, so they show a link, not proof. But the message is simple: make iron a daily part of the first foods.
| Iron food | How to serve it at 6 months |
|---|---|
| Beef, lamb, dark-meat chicken | Slow-cooked and pureed, or minced into soft food |
| Eggs | Well cooked, mashed or in strips of soft omelet |
| Iron-fortified infant cereal | Oat, barley or multigrain, mixed with breast milk or formula |
| Lentils, beans, tofu | Cooked very soft and mashed |
| Salmon, sardines (boneless) | Flaked fine and mixed into puree |
Serve plant iron with a vitamin C food, such as berries, tomato, broccoli or sweet potato; CDC notes this helps your baby absorb the iron. Lentils with mashed sweet potato, or oat cereal with a few mashed berries, does it. If you're breastfeeding, ask your pediatrician whether your baby needs iron drops before 6 months. Don't add iron drops on your own.
Free: the 60-second Prenatal Label Check
Check your prenatal vitamin against what the research says a growing brain needs, and get Part 1 of the book free.
Eggs and fish: two brain foods for babies
Both are welcome from around 6 months.
Eggs bring choline, protein and some iron. Cook them fully, until the yolk and white are firm. Mashed, scrambled or as strips of soft omelet, they make an easy first food.
Fish brings DHA, the omega-3 fat that's a building block of the brain and eyes, plus iodine and protein. CDC says to avoid high-mercury fish for young children (shark, swordfish, king mackerel, marlin, orange roughy, bigeye tuna and Gulf tilefish) and notes that many other fish are lower in mercury and support brain development. Salmon, sardines, trout and pollock are good choices. FDA's child serving sizes start at about 1 oz for ages 1 to 3, so a baby's portion is a spoonful or two. Check carefully for bones.
Iodine matters too. Babies need about 130 mcg a day from 7 to 12 months. Eggs, dairy such as plain yogurt and cheese, and fish all add some. Don't salt your baby's food to get iodine, though; CDC advises avoiding salty foods for young children.
Bring in allergens early
Many parents still wait on peanuts and eggs. The best evidence points the other way. In the LEAP trial, among babies with severe eczema or egg allergy who weren't already sensitized, peanut allergy at age 5 was 13.7% in the group that avoided peanut and 1.9% in the group that ate it regularly. CDC adds eggs, shellfish, nut butters and wheat to the allergy-prone foods to introduce along with other foods. Never give whole nuts or spoonfuls of peanut butter; thin smooth peanut butter or stir it into a puree. Ask your pediatrician first if your baby has severe eczema or a known food allergy. The details are in when to introduce eggs and peanuts.
How to serve first foods
- Texture: start smooth or mashed, then move to lumpier foods as your baby learns. Some gagging is normal.
- Finger foods: cook until soft, and cut pieces no bigger than ½ inch (about 1 cm).
- One at a time: CDC suggests one new single-ingredient food at a time, with 3 to 5 days between new foods, so you can spot a reaction.
- Cereal: choose oat, barley or multigrain infant cereal rather than rice cereal alone, and go easy on rice snacks. See rice cereal and arsenic.
- Variety: offer the same vegetable many times, even after a grimace. A face is not a "no."
- Safety: seat your baby upright and stay with them while they eat. Some foods are off the menu for now; see foods babies should not eat before age 1.
Let your baby lead, and talk at meals
Responsive feeding means you decide what and when, and your baby decides how much. "More" looks like leaning in, opening the mouth, reaching or pointing. "Done" looks like turning away, pushing food off or keeping the mouth shut. Then stop, even if the bowl isn't empty. Don't use food as a reward or punishment.
Meals are also conversations. Name the food ("Egg. Warm egg."), copy your baby's faces, let them squish the avocado. A high chair at the family table is a great spot for back-and-forth talk, and that talk is part of what builds the brain too.
Do this
- Make an iron-rich food part of your baby's first foods every day.
- Serve plant iron with a vitamin C food such as berries or sweet potato.
- Offer well-cooked egg and boneless low-mercury fish from around 6 months.
- Choose oat, barley or multigrain infant cereal instead of rice cereal alone.
- Ask your pediatrician first about allergens if your baby has severe eczema or a food allergy.
When to ask your doctor
Check with your doctor or midwife first if…
- your baby has severe eczema, egg allergy or another known food allergy
- your baby was born early or has a feeding or swallowing problem
- you're breastfeeding and wondering whether your baby needs iron drops before 6 months
- you're thinking of starting solids before 4 months
Call your doctor now if…
- your baby has trouble breathing after a new food (call 911)
- your baby has swelling of the lips, tongue or face (call 911)
- hives spread over your baby's body (call 911)
- your baby is choking and can't breathe, cough or cry (call 911)
This page is general information, not medical advice. Every pregnancy and every child is different. Ask your doctor, midwife or pediatrician before changing supplements, diet or care.
Grow a Genius
In the book: Chapter 17: Feeding the Growing Brain
Chapter 17 covers the first year of feeding in full, from breast and bottle to iron-first solids, allergens and the rice question, and The Genius Kitchen guide adds first-food recipes for babies and toddlers.
- The 7 Genius Builders, stage by stage
- 16 printable guides, including the Prenatal Label Decoder
- Built on 500+ sources from 35+ countries
- 90-day Double Guarantee
People also ask
What should my baby's first food be?
Something iron-rich. CDC advises starting with solids that contain iron at around 6 months. Good options are pureed meat, mashed well-cooked egg, very soft lentils or iron-fortified oat, barley or multigrain cereal. For most babies the order of other foods doesn't matter, according to the AAP.
Can babies eat eggs at 6 months?
Yes. Eggs are welcome from around 6 months and bring choline, protein and some iron. Cook them fully, until firm, and serve them mashed, scrambled or as soft omelet strips. If your baby has severe eczema or a known food allergy, ask your pediatrician first.
What fish is safe for babies?
Lower-mercury fish such as salmon, sardines, trout and pollock, flaked fine and boneless. CDC says to avoid high-mercury fish for young children, the same list as in pregnancy, including shark, swordfish and king mackerel. A baby's portion is a spoonful or two.
Is rice cereal a good first food?
Rice cereal is often suggested, but oat, barley or multigrain infant cereal is a better everyday choice. CDC suggests the same, and rice can carry more arsenic than other grains. Pick an iron-fortified cereal, mix it with breast milk or formula, and keep rice snacks occasional.