By 12 months, what growth milestone is typical for most infants?

By 12 months, what growth milestone is typical for most infants?

• A. Infants usually double their birth weight by 6 months and triple it by 1 year
• B. Infants triple their birth weight by 6 months
• C. Infants quadruple their birth weight by 12 months
• D. Infants do not change in weight during the first year

Answer: (A)

Infants typically grow in weight by about double their birth weight by six months and about triple by one year. This pattern reflects rapid early growth and is a common benchmark used in pediatric growth assessments. By twelve months, being around three times the birth weight is typical, which is exactly what the statement describes. The other options don’t fit this well-established trajectory: tripling by six months would be unusually rapid for most babies, quadrupling by twelve months is more than the usual range, and no weight change in the first year contradicts standard growth expectations.

Infants typically grow in weight by about double their birth weight by six months and about triple by one year. This pattern reflects rapid early growth and is a common benchmark used in pediatric growth assessments. By twelve months, being around three times the birth weight is typical, which is exactly what the statement describes. The other options don’t fit this well-established trajectory: tripling by six months would be unusually rapid for most babies, quadrupling by twelve months is more than the usual range, and no weight change in the first year contradicts standard growth expectations.