Prevalence of underweight among adults (ages 20-64 years)
Individuals who were underweight (numerator), among Individuals aged 20-64 years with documented BMI components (denominator)
The epidemic of obesity is expected to further increase globally, while contributing to morbidity as well as a significant economic burden . Therefore, it is important to monitor BMI and provide guidance for maintaining healthy lifestyle and body weight, in particular as preventive measures before the occurrence of accompanying morbidities . Furthermore, monitoring body weight has an important role in primary care, as weight loss and underweight may serve as early signals for various chronic conditions, including depression, dental problems, and drugs side effects .
Individuals in the denominator who were underweight (BMI<19 Kg/m2)
Individuals aged 20-64 years 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].
 In Hebrew: “המלצות כוח המשימה הישראלי בנושא קידום בריאות ורפואה מונעת, 2013” ההסתדרות הרפואית בישראל, האגף למדיניות רפואית, איגוד רופאי המשפחה [Online]. Available: https://www.ima.org.il/userfiles/image/clinical_09_preventive.pdf [Accessed: 21-Mar-2018].