Assessment of overweight and obesity in Iranian adolescents: optimal cut-off values of anthropometric indices.

Background: Various indices have been used to estimate overweight and obesity; all have limitations and strengths. The prevalence of overweight and obesity may differ by ethnicity.

Aims: This study evaluated waist circumference (WC), waist-to-hip ratio (WHpR), waist-to-height ratio (WHtR) and neck circumference (NC) as reliable alternatives to body mass index for screening for overweight and obesity, and determined their optimum cut-off values in different ethnic groups.

Association of breakfast intake with cardiometabolic risk factors.

Objective: this study aimed to evaluate the association of breakfast intake with cardiometabolic risk factors in a nationally-representative sample of Iranian pediatrics.

Methods: the study participants considered of 5,625 school students aged 10-18 years, studied in the third survey of the national school-based surveillance system (CASPIAN-III). They were classified into three groups based on the number of days they ate breakfast: "regular breakfast eater" (6-7days/week), "often breakfast eater" (3-5days/week), and "seldom breakfast eater" (0-2 days/week).