pediatrics
Physical Growth of Infants and Children
Weight
Weight follows a similar pattern. Full-term neonates generally lose 5 to 8% of birth weight in the first few days after delivery but regain their birth weight within 2 weeks. They then gain 14 to 28 g/day until 3 months, then 4000 g between 3 and 12 months, doubling their birth weight by 5 months, tripling it by 12 months, and almost quadrupling it by 2 years. Between age 2 years and puberty, weight increases approximately 2 kg/year. The prevalence of Children (see table The CDC has releasedextended BMI-for-age growth chartsfor boys and girls with a very high BMI value. Age Group Age Group 1976–1980 1976–1980 1988–1994 1988–1994 2003–2004 2003–2004 2007–2008 2007–2008 2009–2010 2009–2010 2011-2012 2011-2012 2013–2014 2013–2014 2015–2016 2015–2016 2017–2018 2017–2018 2–5 years 5% 7.2% 13.9% 10.1% 12.1% 8.4% 9.4% 13.9% 13.4% 6–11 years 6.5% 11.3% 18.8% 19.6% 18.0% 17.7% 17.4% 18.4% 20.3% 12–19 years 5% 10.5% 17.4% 18.1% 18.4% 20.5% 20.6% 20.6% 21.2% Data fromFryar CD, Carroll MD, Afful J: Prevalence of overweight, obesity, and severe obesity among children and adolescents aged 2–19 years: United States, 1963–1965 through 2017–2018. NCHS Health E-Stats, 2020. 1.Stierman B, Afful J, Carroll MD, et al: National Health and Nutrition Examination Survey 2017–March 2020 Prepandemic Data Files—Development of Files and Prevalence Estimates for Selected Health Outcomes. National Health Statistics Reports; no 158, 2021. 