From birth to 6 months, term infants require approximately how many kcal/kg/day for normal growth and activity?

• A. 100-110 kcal/kg/day
• B. 105-110 kcal/kg/day
• C. 108 kcal/kg/day
• D. 110-120 kcal/kg/day

Answer: (C)

Infants from birth to six months have energy needs that are best described per kilogram of body weight because growth and metabolism are rapid and weight-based. The standard estimate for healthy term babies is about 108 kcal per kilogram per day to support normal growth and activity. This value sits within a narrow range (roughly 105–110 kcal/kg/day) used in pediatric nutrition to guide feeding during this period. Breast milk and infant formula are designed to meet this level of energy when fed in typical amounts, with breast milk providing about 0.65–0.67 kcal/mL and formula having a similar energy density. The other options are broader or imply a higher energy need than what is typically recommended, so 108 kcal/kg/day is the best match.