Obesity, the most common health problem facing children, is known to have been ascribed to multifactors. Our research is aimed at finding out if there exists any relation of children's obesity with their family and also with their daily habits.

The study included 145 obese children and 44 non-obese children, who visited our pediatric clinic from January 2006 to December 2008. The children were divided into three groups according to body mass index(BMI)(group I:non-obese control children, group II:children with BMI between 85 and 94 percentile, group III:children with BMI above 95 percentile). Research was performed in three groups by measuring of body weight, height and questionnaires.

There was no significant difference in sex and age. The parental BMI of the obese children were higher than those of non-obese children. Obesity of children was more highly related to maternal BMI than partenal BMI. Birth weight and birth order in the obese children showed no remarkable difference from those of non-obese children. The sleeping hours of the obese children were much longer than those of non-obese children. Television viewing hours of the obese children showed no remarkable difference from those of non-obese children. Family members with group III children had many complications which developed from obesity.

The development of obesity in children is attributed to the hereditary factors of their parents and daily habits such as sleeping hours. Therefore, family-based weight control is important to treat childhood obesity.