Journal of School of Public Health and

Background and Aim: Food and nutrition is one of the most essential needs of human societies and gaining sufficient and suitable food for all people is based on food security. Children are one of the most volnurable groups, so researchers and nutritionest emphasize on studying and analyzing of different aspects, effects and associated facters on prevalence of food insecurity and obesity among children. This study aimed to determine the association between obesity and food security and some related family factors inYazd primery school children.

Materials and Methods: Using two stage cluster sampling from 35 Yazd primary schools, a total of 3245 students aged 9-11y (1587 boys & 1658 girls) were randomly selected. Then 187 students 9-11y who had a BMI 95th percentile of Hosseini et al. (1999) reference, were identified as obese and 187 same age and gender pupils (having 15th<85th percentile) were studied as controls. Data were collected by demographic and USDA questionnaires.

Results: We found that the prevalence of obesity among student aged 9-11 years was 13.3% and the prevalence of food insecurity was 30.5%. Data analysing indicated that with adjusting variables such as "paternal education and occupation, economic status" there was a significant association between obesity and food insecurity in these levels: father's educated by secondary school, self-employment and low and moderate level of economic status. However, no significant association was observed between obesity and food insecurity when family size and maternal education were adjusted.

Conclusion: Paternal education and occupation, and family economic status were recognised as associated factors with food insecurity but other factors didn,t show significant relationship. There is lack of published information regarding some factors affecting food security therefore, it is necessary to performe such studies in other regions too.

Background and Aim: Sex education of children, a complex issue in any culture, has always been a controversial subject. Schools can play a vital role in imparting sex education to children, particularly in more conservative communities. The objective of this study was to find out primary school teachers' beliefs, attitudes, values, and understandings regarding sex education of school pupils.

Materials and Methods: In this qualitative study we employed a community-based approach to design the project. Purposeful, voluntary and maximum variation sampling was used to recruit 22 teachers from selected schools in Western Tehran (21 female and 1 male teacher). Information was collected in 4 focus-group discussion sessions. Grounded theory and thematic analysis were used.

Results: Findings revealed three major themes: 1) organizational role, 2) institution construction, and 3) individual characteristics. These themes were described by subthemes as follows: 1. for organizational role: organizational culture and policies 2. for institution construction: family and educational institutions 3. for individual characteristics: biology, gender, instincts, curiosity, knowledge, and behaviors.

Conclusion: From the participants' point of views, the school and the family are two important institutions in children sex education. However, teachers are not sufficiently competent in sex behavior education. Inappropriate policies, resource limitations, and the family cultural structure are obstacles in sex education of children in schools. The participants believe the following are priorities in children's sex education: changing cultural attitudes in organizations and institutions, such as cultural diffusion sound training approaches in sex-related topics providing sufficient resources improving knowledge and skills of teachers in the area of sex education of pupils and effective interaction between families and school authorities.