Children and Adolescents
Prevalence of thinness among children (age 7 years)
Children whose BMI was considered thin (numerator), among 7 year-old children with documented BMI components (denominator)
Nearly one in six children are overweight or obese in OECD countries; in 2015, the country-specific prevalence of overweight and obesity at age 15 ranged from 10% to 31%. Despite the implementation of new policies to combat obesity, prevalence has steadily increased since 2000 in most countries . Monitoring weight and height in children and adolescents is of great importance, as early detection of overweight or obesity and intervention may prompt the adoption of a healthier lifestyle. In addition, the detection of extreme thinness should be carefully addressed, as it may signify malnutrition, morbidity, or eating disorders . The Israeli Ministry of Health recommends recording weight and height at least once between the ages of 5-7 years, and every three years in adolescence . The BMI category in this measure is based on the WHO Anthro sex- and age-specific BMI percentiles .
Children in the denominator whose BMI was considered thin (lower than the 2.3rd percentile)
7 year-old children with documented BMI components
 “Obesity-Update-2017,” OECD, 2017. [Online]. Available: http://www.oecd.org/health/health-systems/Obesity-Update-2017.pdf. [Accessed: 15-Feb-2018].
G?ng?r NK: Overweight and obesity in children and adolescents. J Clin Res Pediatr Endocrinol 2014, 6(3):129-143.
 In Hebrew: משרד הבריאות. חובת תיעוד של גורמי סיכון ואורחות חיים בתיק הרפואי הממוחשב. חוזר המנהל 2011 ביולי, 18 הכללי. Available at: https://www.health.gov.il/hozer/mk21_2011.pdf
World Health Organization. Growth reference 5-19 years 2017. Available at: http://www.who.int/growthref/who2007_bmi_for_age/en/