By age 1 year, which statement about birth weight is most accurate?

By age 1 year, which statement about birth weight is most accurate?

• A. Birth weight is typically double
• B. Birth weight is typically triple
• C. Birth weight is typically quadruple
• D. Birth weight remains the same

Answer: (B)

In the first year, growth in weight proceeds rapidly, with birth weight typically tripling by the end of the year. Doubling occurs earlier (around 4 to 6 months), and quadrupling is usually not seen until about age 2. This pattern helps clinicians gauge nutrition and development; for example, a baby born at 3.5 kg would commonly weigh around 10.5 kg at 12 months.

In the first year, growth in weight proceeds rapidly, with birth weight typically tripling by the end of the year. Doubling occurs earlier (around 4 to 6 months), and quadrupling is usually not seen until about age 2. This pattern helps clinicians gauge nutrition and development; for example, a baby born at 3.5 kg would commonly weigh around 10.5 kg at 12 months.