وضعيت چربي خون و چربي رژيم غذايي نوجوانان

Lipid profile and fat intake of adolescents: Isfashan healthy heart program-heart health promotion from children

Introduction: The serum lipid profiles of Iranian adolescents and its correlation with dietary fat intake and evaluation of the behavior, attitude, skills and knowledge (BASK) of students, parents and school staffs was evaluated, regardingly, in order to design an effective community-based intervention program for cardiovascular disease risk factors prevention and control. Material & Methods: The subjects have been 2000 randomly selected students (1000 girls, 1000 boys) aged between 11-18 years, their parents (2000 samples) and their school stuffs (500 samples) in urban and rural areas of two provinces in Iran (one considered for further interventions and the other as reference area). The data were obtained by questionnaires; anthropometrics measurements, 3 days food record form and serum lipids were measured in the central laboratory of Isfahan cardiovascular Research Center. Data have been analyzed by SPSSvio/ Win software using the student t- and multiple linear regression tests at significant level of P<0.05. Results: Most of students, parents and school staffs had enough knowledge about a healthy nutrition but their practice was against it. This is suggested to be mostly due to considerable higher price of liquid oil than solid oil. Although the percent of the adolescents fat intake e (<30%), but in most cases, the percentiles of serum total cholesterol, LDL-C and triglyceride were significantly higher and the percentiles of HDL-C were significantly lower than normal values, e.g. the mean obtained cholesterol for girls in 11-14 and 15-18 years age groups were significantly higher than standard values (169 and 172 vs. 160 and 159 mg/dl; respectively, PO.05). this difference was also significant in boys (167 and 168 vs. 160 and 153 mg/dl, PO.05). A direct relationship was shown between fiat /salty snacks (P<0.05). Although the percent of protein intake was lower than recommended daily allowance (13.4% vs. 15%, PO.05) but regarding the consumption of high fat containing lamb meat in most cases, the frequency of red meat consumption had direct correlation with dyslipidemia (PO.05). Hypertriglyceridemia is in part suggested to be an effect of the percent of carbohydrate intake being higher than RDA (65.2% vs. 55%, PO.05) Conclusion: Dietary guidelines for fat intake during childhood and adolescence must be developed within individual countries, taking into account the changes in availability and quality of the food supply.