Good nutrition during infancy lays the foundation for healthy growth and development. From breast milk or formula to the exciting introduction of solid foods, each stage brings new nutritional needs and milestones. Discover practical, evidence-based guidance on nutrient-rich foods, responsive feeding, food safety, and creating positive mealtime experiences to support your baby throughout their first year.
Good nutrition during infancy provides an important foundation for healthy growth and development. During the first year of life, babies grow rapidly, and their nutritional needs change significantly. From breast milk or infant formula to the introduction of complementary foods, understanding each stage can help parents and caregivers make informed feeding decisions.
Every baby develops differently, so feeding recommendations should be considered alongside an infant’s individual growth, developmental readiness, and medical needs.
Nutrition During the First Six Months
During approximately the first six months of life, breast milk or properly prepared infant formula provides the primary source of nutrition for babies.
The World Health Organization (WHO) recommends exclusive breastfeeding for the first six months of life, followed by the introduction of nutritionally adequate complementary foods while breastfeeding continues up to 2 years of age or beyond (World Health Organization [WHO], 2023).
However, breastfeeding is not possible or preferred in every family. Commercial infant formula is designed to provide appropriate nutrition for infants when formula feeding is needed or chosen. Parents who have questions about breastfeeding, formula selection, feeding quantities, or their baby’s growth should seek individualized guidance from a pediatrician or other qualified healthcare professional.
Introducing Solid Foods
At around 6 months of age, babies generally begin to need complementary foods in addition to breast milk or infant formula. Developmental readiness is important when deciding when to begin.
Signs of readiness may include being able to sit with support and maintain good head and neck control, showing interest in food, and being able to swallow food rather than consistently pushing it out of the mouth.
Complementary feeding is an opportunity to introduce babies to different tastes and textures. Foods should be prepared in forms appropriate for the baby's developmental abilities and should minimize choking risks.
Prioritizing Nutrient-Rich Foods
As babies begin eating complementary foods, offering a variety of nutrient-rich options can help meet their increasing nutritional requirements.
Iron is particularly important during infancy. Around 6 months of age, infants require an additional source of iron outside breast milk (Centers for Disease Control and Prevention [CDC], 2025). Appropriate iron-rich complementary foods may include iron-fortified infant cereals, meat, poultry, fish, beans, lentils, and other foods prepared in developmentally appropriate textures.
Babies can also gradually experience vegetables, fruits, grains, proteins, and other foods. Introducing different flavors and textures during infancy may help children become familiar with a diverse range of foods.
Introducing Common Food Allergens
Parents sometimes delay introducing foods such as eggs or peanuts because of concerns about allergies. Current guidance has shifted away from routinely delaying common allergens.
For example, guidelines from the National Institute of Allergy and Infectious Diseases recommend introducing age-appropriate peanut-containing foods as early as 4–6 months for some infants at high risk of peanut allergy after appropriate evaluation. Timing differs according to the infant's risk factors (Togias et al., 2017).
Common allergens should be introduced in developmentally appropriate and safe forms. Whole peanuts and thick spoonfuls of peanut butter are choking hazards and should not be given to infants.
Parents of babies with severe eczema, an existing food allergy, or other concerns about allergic reactions should speak with their healthcare professional about when and how to introduce allergenic foods.
Foods and Drinks to Avoid
Some foods are unsuitable for infants. Honey should not be given to children younger than 12 months because it can expose infants to bacteria that may cause infant botulism (CDC, 2024).
Cow's milk should also not replace breast milk or infant formula as the main drink before 12 months, although pasteurized dairy products and cow's milk used in food may be introduced when developmentally appropriate.
Foods that create choking hazards require particular attention. Whole nuts, popcorn, whole grapes, chunks of hard raw vegetables, and other hard or round foods should be avoided or modified appropriately.
Added sugars and foods high in sodium are also unnecessary for infants. Early feeding is an opportunity to allow babies to experience the natural flavors of different foods.
Responsive Feeding
Infant nutrition is not only about what babies eat but also how they are fed.
Responsive feeding involves recognizing and responding appropriately to an infant's hunger and fullness cues. A hungry baby may reach toward food, open their mouth when food is offered, or become excited when they see food. A baby who has had enough may turn their head away, close their mouth, or lose interest in eating.
Rather than pressuring an infant to finish a specific amount, caregivers can provide appropriate foods and allow the baby to communicate when they have had enough. This approach respects differences in appetite and helps make mealtimes a positive learning experience.
Making Mealtimes Safe and Positive
Eating is a new skill for babies. Exploring food can be messy, and infants may need repeated opportunities to become comfortable with unfamiliar tastes and textures.
Caregivers can create positive mealtimes by offering appropriate foods without pressure, allowing babies to explore, and eating together when possible. Babies should always be appropriately positioned and closely supervised while eating.
Caregivers should also understand the difference between gagging and choking and learn appropriate infant first aid and choking-response techniques.
Final Thoughts
Infant nutrition is a journey that changes rapidly throughout the first year. Breast milk or infant formula provides essential early nutrition, while complementary foods introduced around 6 months expand a baby's diet and provide additional nutrients needed for continued growth and development.
Offering a variety of nutrient-rich foods, prioritizing iron, introducing appropriate textures, practicing responsive feeding, and following food-safety recommendations can help establish a healthy nutritional foundation.
Most importantly, every infant is different. Premature babies and infants with feeding difficulties, poor growth, allergies, medical conditions, or other special nutritional needs may require individualized recommendations from their pediatrician, registered dietitian, or another qualified healthcare professional.
References
Centers for Disease Control and Prevention. (2024). Foods and drinks to avoid or limit. U.S. Department of Health and Human Services.
Centers for Disease Control and Prevention. (2025). Iron. U.S. Department of Health and Human Services.
Togias, A., Cooper, S. F., Acebal, M. L., Assa’ad, A., Baker, J. R., Jr., Beck, L. A., Block, J., Byrd-Bredbenner, C., Chan, E. S., Eichenfield, L. F., Fleischer, D. M., Fuchs, G. J., III, Furuta, G. T., Greenhawt, M. J., Gupta, R. S., Habich, M., Jones, S. M., Keaton, K., Muraro, A., . . . Boyce, J. A. (2017). Addendum guidelines for the prevention of peanut allergy in the United States: Report of the National Institute of Allergy and Infectious Diseases-sponsored expert panel. Journal of Allergy and Clinical Immunology, 139(1), 29–44. https://doi.org/10.1016/j.jaci.2016.10.010
World Health Organization. (2023). WHO guideline for complementary feeding of infants and young children 6–23 months of age. World Health Organization.