Baby First Foods Guide: When to Start and What to Feed

When Is a Baby Ready for Solid Foods?

The World Health Organization, the American Academy of Pediatrics, and Health Canada all recommend exclusive breastfeeding or formula feeding until 6 months of age, followed by the introduction of complementary solid foods. The previous recommendation of 4 months was revised based on evidence showing that the gut lining matures significantly between 4 and 6 months, reducing the permeability that allows allergens to pass into the bloodstream. Starting solids before 4 months is associated with increased risk of obesity, celiac disease, and respiratory infections.

Chronological age is necessary but not sufficient for readiness. Three physical milestones must also be present before introducing solids: the baby must be able to hold the head steady and upright independently, must be able to sit with minimal support, and must have lost the tongue-thrust reflex — the automatic pushing of objects out of the mouth that is present in younger infants. A baby who tips over when seated or who pushes food out immediately is not yet developmentally ready regardless of age.

First Foods to Introduce: Iron Is the Priority

Iron is the most critical nutrient to prioritize at 6 months because the iron stored in the liver at birth is depleted by approximately this age, and breast milk — while beautifully complete in almost every other respect — contains only 0.3 milligrams of iron per liter, which is far below the 11 milligrams per day a 7-to-12-month-old requires. Iron deficiency is the most common nutritional deficiency in infants worldwide, affecting approximately 25 percent of babies globally, and its effects on brain development are partially irreversible even after correction.

• Iron-rich first foods: pureed meat (beef, chicken, lamb), iron-fortified single-grain cereals, pureed lentils
• Vitamin C foods alongside iron sources: mashed sweet potato, pureed broccoli, soft cooked pear — increases iron absorption by up to 67 percent
• Other excellent early foods: mashed avocado, pureed banana, well-cooked and mashed egg yolk
• Soft finger foods for baby-led weaning: steamed carrot sticks, soft banana pieces, scrambled egg

Single-ingredient foods should be introduced one at a time, with a 3-day wait period between each new food. This window allows parents to identify which food caused a reaction if an allergic response occurs. Reactions to watch for include hives, swelling of the lips or face, vomiting within 2 hours of eating, persistent diarrhea, or extreme fussiness. Mild reactions may be managed with antihistamine, while severe reactions (difficulty breathing, pale or blue coloring, loss of consciousness) require immediate emergency services.

How to Introduce the Top 9 Allergens Safely

Research has fundamentally shifted the approach to allergen introduction over the past decade. The landmark LEAP (Learning Early About Peanut allergy) study, published in the New England Journal of Medicine in 2015, found that introducing peanut products to high-risk infants (those with severe eczema or egg allergy) before 11 months reduced the risk of peanut allergy by 81 percent compared to avoidance. Subsequent research has confirmed similar benefits for other major allergens. Current guidelines now recommend introducing all 9 major allergens — milk, egg, peanut, tree nuts, wheat, soy, fish, shellfish, and sesame — before 12 months.

Peanut products should be introduced as smooth peanut butter thinned with breast milk, formula, or water — never as whole peanuts or chunky peanut butter, which are choking hazards. Egg can be introduced as well-cooked scrambled egg. Fish should be thoroughly cooked and pureed or flaked finely. For tree nuts, thin nut butter is appropriate. Each allergen should be introduced on a separate day, and parents should not introduce a new allergen on a day when the baby is unwell, as illness can mimic or mask allergic reactions.

Purees vs Baby-Led Weaning: What the Research Says

Baby-led weaning (BLW) is an approach where soft finger foods replace purees from the very start of solid introduction, allowing the baby to self-feed and explore food texture independently. A 2018 systematic review in the British Medical Journal Open found that BLW was associated with lower body mass index and lower rates of food fussiness at 18 to 24 months compared to traditional spoon-fed purees. However, the same review flagged increased risk of inadequate iron intake in BLW babies if iron-rich finger foods are not consistently prioritized.

A combined approach — offering some soft finger foods alongside iron-rich purees spoon-fed by the parent — captures the developmental and sensory benefits of BLW while ensuring adequate nutrient intake. This is the approach endorsed by the Canadian Paediatric Society in its 2020 position statement on solid introduction. The key principle regardless of method is to follow the baby lead: stop feeding when the baby turns away, closes the mouth, or shows loss of interest, as these are signs of satiety.

Foods to Avoid Under 12 Months

1. Honey: Risk of infant botulism — Clostridium botulinum spores can germinate in the immature infant gut before 12 months
2. Cow milk as a main drink: Displaces breast milk or formula, too high in protein and sodium for kidneys under 12 months
3. Unpasteurized dairy products: Risk of Listeria, E. coli, and Salmonella contamination
4. Added salt: Infant kidneys cannot process adult sodium levels — no salt in cooking for baby food
5. Added sugar: No nutritional benefit, establishes preference for sweet foods, risk of dental decay once teeth appear
6. Choking hazards: Whole grapes, raw carrots, apple chunks, whole nuts, popcorn, large meat pieces
7. Low-fat or diet products: Infants require dietary fat for brain development — always use full-fat dairy products

Fruit juice — even 100 percent pure fruit juice — is not recommended for infants under 12 months by the American Academy of Pediatrics. Juice provides concentrated sugar without the fiber of whole fruit, contributes to tooth decay even before teeth fully emerge, and displaces more nutritious foods in the diet. Water is also not recommended in large quantities before 6 months because it can cause hyponatremia (dangerously low sodium levels). Small amounts of water with meals after 6 months are acceptable.

Progressing Textures as the Baby Develops

Texture progression is as important as food variety. Starting at 6 months with smooth, thin purees, parents should gradually thicken textures over the following weeks. By 7 to 8 months, mashed and minced foods with soft lumps help develop the lateral tongue movement and jaw strength needed for chewing. By 9 to 10 months, most babies can manage soft diced pieces they can pick up with a pincer grasp. By 12 months, most family foods (appropriately modified for salt and sugar) can be offered in small, manageable pieces.

Gagging is a normal and protective reflex during the texture progression process — it is different from choking and should not cause alarm. The gag reflex in infants is positioned further forward in the mouth than in adults, meaning it triggers more easily. As the baby becomes more experienced with solid foods, the gag reflex gradually moves backward to its adult position. Choking, by contrast, involves silent distress, blue coloring, and inability to cough — parents should take an infant first aid course before starting solids so they can respond confidently to both gagging and true choking emergencies.