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Normal Infant Weight Gain

Infants gain weight at average rates of 1 to 2 pounds per month for the first six months. Normal weight gain can vary for infants based on metabolic rates, infant temperament and personality, and frequency of breast-feeding.

  1. Significance

    • Parents are concerned with their infants weight gain because they want to know that their baby is receiving enough nutrition and maintaining healthy growth rates.

    Time Frame

    • Newborns gain an average of 4 to 7 oz. ounces a week within the first month totaling around 1 to 2 pounds a month for the first six months. Check online resources such as the American Academy of Pediatrics website to see if your infant is gaining weight at a normal rate for his or her age (see Resources below).

    Effects

    • Breast-fed babies tend to gain weight at different rates than formula-fed babies. After the first six months, breast-fed babies tend to be leaner than formula-fed babies.

    Considerations

    • Personality can affect an infant's rate of weight gain. Calm, laid-back babies tend to gain more weight because they do not burn as many calories as more active, busier babies.

    Warning

    • Contact your pediatrician immediately if your newborn exhibits a significant drop in his or her growth rate and weight gain. Early intervention can prevent health problems and usually resolves the issue quickly.

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