Dietary fat quantity and quality in relation to general and abdominal obesity in women: a cross-sectional study from Ghana.

BACKGROUND: Although relationships between obesity and total fat and fat types have been widely examined, the associations between the relative proportions of fatty acids calculated in the form of indices and obesity/overweight are lacking. The objective of this study was to assess associations between dietary fat quality indices and odds of obesity/overweight in women from Ghana. METHODS: In this cross-sectional study, dietary information was obtained using 24-h dietary recall. The odds of obesity were evaluated across quintiles of specific DFQ indices [atherogenicity index (AI), thrombogenic index (TI), hypo- and hypercholesterolemic fatty acids ratio (h/H), omega-3 to omega-6 polyunsaturated fatty acids ratio (∑ω-3/∑ω-6), polyunsaturated fatty acids/saturated fatty acids ratio (PSR), dietary lipophilic index (LI) and percentage of energy from total fat (TF)]. RESULTS: After adjustment for covariates, general obesity and overweight were inversely associated with ∑ω-3/∑ω-6 ratio (OR: 0.63; 95% CI: 0.24-1.63; P for trend (P) = 0.005) and positively with TI (4.14; 95% CI: 1.78-9.66; P = 0.01) and LI (2.49; 95% CI: 1.14-5.43; P = 0.01). The odds of abdominal obesity based on waist circumference (WC) were significantly higher among participants in the fifth quintile (Q) compared with those in the first Q of AI (1.24; 95% CI: 0.56-2.74; P = 0.01), TI (4.14; 95% CI: 1.78-9.66; P = 0.009), LI (2.11; 95% CI: 0.98-4.55; P = 0.02) and TF (1.59; 95% CI: (0.73-3.46; P = 0.003). Similarly, waist to height ratio (WHtR) was positively associated with AI (2.89; 95% CI: 1.32-6.31; P = 0.04), TI (2.65; 95% CI: 1.22-5.76; P = 0.03), LI (3.32; 95% CI: 1.52-7.28; P = 0.007) and TF (1.83; 95% CI: 0.85-3.93; P = 0.009). CONCLUSION: There was an inverse association between ∑ω-3/∑ω-6 ratio and general obesity and WC. We also found positive associations between abdominal obesity and AI and TF. Furthermore, TI and LI showed positive relationships with both general and abdominal obesity. Therefore, intake of dietary fatty acids in favor of higher ratios of ∑ω-3/∑ω-6 may be important in obesity prevention.

Health concerns of adolescents in Tehran, Iran.

BACKGROUND: Adolescent health concerns are an important source of information that should be considered when planning school and community health promotion policies, programs and services. Adolescence is a critical period of human development and the health concerns of adolescents can point to important issues that may be eclipsed by epidemiologic and other clinical sources of information. This study aimed to assess the health concerns of adolescents living in Tehran, Iran and to examine associations between selected demographics and the health concerns reported by participants. METHODS: This study was a population-based cross-sectional survey in 2011. Data were collected from a stratified random cluster sample of 915 adolescents, aged 14-18 years, living in Tehran, using the Persian version of the Adolescent Health Concern Inventory (AHCI-P). The data were analyzed using the χ2, Mann-Whitney and Kruskal-Wallis tests and logistic regression analysis. RESULTS: The mean numbers of health concerns in girls and boys were 48 (±27.6) and 44.5 (±27.4) respectively. The highest ranking health concern subscale for both girls and boys was The Future, and "being successful" was endorsed as the most prominent concern in the subscale. Female (OR: 1.42, CI 95%: 1.08-1.87), mother's educational level (OR: 2.23, CI 95%: 1.07-4.65) and living in northern (OR: 1.76, CI 95%: 1.13-2.74) and western (OR: 2.02, CI 95%: 1.30-3.16) regions of Tehran were significant predictors of a higher level of health concerns. CONCLUSION: Findings can be used to inform school and public health promotion policies, programs and supportive services designed to improve the overall health and well-being of adolescents.

Presenting a model for dynamic facial expression changes in detecting drivers' drowsiness.

Drowsiness while driving is a major cause of accidents. A driver fatigue detection system that is designed to sound an alarm, when appropriate, can prevent many accidents that sometime leads to the loss of life and property. In this paper, we classify drowsiness detection sensors and their strong and weak points. A compound model is proposed that uses image processing techniques to study the dynamic changes of the face to recognize drowsiness during driving.

Effects of calcium supplement therapy in women with premenstrual syndrome.

OBJECTIVE: Scientific evidence suggests that cyclic fluctuations in a variety of nutrients, especially calcium, may help to explain some features of premenstrual syndrome (PMS). We determined the efficacy of calcium supplementation in women suffering from PMS. MATERIALS AND METHODS: A double-blind clinical trial was designed to evaluate the effect of calcium supplement therapy on PMS symptoms. The study groups were selected from young female college students, based on PMS criteria. The subjects were divided in two groups; one group received placebo and the other received 500 mg of calcium carbonate twice daily for 3 months. The severity and intensity of symptoms, including early fatigability, changes in appetite, and depression, were evaluated using a standard questionnaire. Symptoms were compared before and after treatment. RESULTS: The mean age was 21.4 +/- 3.6 years. Early tiredness, appetite changes, and depressive symptoms were significantly improved in the group receiving calcium treatment compared with the placebo group. CONCLUSION: Our results showed that calcium supplements reduced early fatigability, changes in appetite, and depression in women with PMS.