Infant Nutrition is a description of the dietary needs of infants. A diet lacking essential calories, minerals, vitamins, or fluids is considered inadequate. Breast milk provides the best nutrition for these vital first months of growth when compared to formula. For example, breastfeeding aids in preventing anemia, obesity, and sudden infant death syndrome; and it promotes digestive health, immunity, and intelligence.

Infants are usually not introduced to solid foods until four to six months of age. Historically, breastfeeding infants was the only option for nutrition otherwise the infant would perish. Breastfeeding is rarely contraindicated but is not recommended for mothers being treated for cancer, those with active tuberculosis, HIV, substance abuse, or leukemia. Clinicians can be consulted to determine what is best for each baby.

Proper infant nutrition demands to provide essential substances that support normal growth, functioning, development, and resistance to infections and diseases. Optimal nutrition can be achieved by deciding to breastfeed or bottle-feed the infant before birth and preparing for either decision.