Non-alcoholic fatty liver disease (NAFLD) is an example of pathological fat accumulation in the liver and one of the major health conditions in the world. This study aimed to examine the independent role of dietary patterns in the development of NAFLD. In a cross-sectional study, 1500 individuals referred to a nutrition clinic were randomly selected, their demographic, anthropometric and blood metabolic indices were obtained, and food frequency questionnaires were completed for them. Liver stiffness was calculated using the NAFLD score formula and fibroscan. The two dominant dietary patterns identified were the “healthy” and “unhealthy dietary patterns”. A significant percentage of those with NAFLD (45%) were in the upper quartile of the unhealthy model; however, only 10% had the healthy pattern (p < 0.001). In this study, 32.9 and 13.9% of the healthy and unhealthy participants were in the upper quartile of the healthy diet pattern. Also, it was shown that waist circumference is a strong mediator of dietary patterns and NAFLD relationship, and the indirect effect of diet through abdominal circumference is 28 times greater than the direct effect on NAFLD. The results suggested that healthy and unhealthy dietary patterns are respectively associated with lower- and higher-risk of NAFLD but the role of waist circumference as a mediator deserves more consideration.

Background: At the beginning of 2020, the end of the solar year 1398 and the middle of 1441, the world was faced with an unknown and uninvited virus called "Covid 19". No medicine has been made to fight this virus yet, so the best way to fight this virus Prevention of infection. Due to the spread of the disease, stopping businesses has damaged the country's economy and morale.Methods: The present research is applied in terms of purpose and descriptive-survey research in terms of method. Among the possible sampling methods, a simple random sampling method has been used and in determining the sample size using Cochran's formula, according to the researcher, the sample size is 210 citizens. In this study, the data were collected through questionnaires distributed among the statistical population, the validity of which has already been confirmed by experts and its reliability experts through Cronbach's alpha test with "0.80" percent.Results: Research shows that law enforcement and physicians have been at high risk for viruses and drivers, workers and hoteliers in terms of economic harm. Therefore, the authorities must plan and manage this crisis with optimal solutions, both at this time and in the unintended future conditions that the country may face, such as this virus, in order to minimize the risk to the nation.Conclusions: The Covid 19 virus is the most dreaded virus in the world, killing not only many people, but also disrupting their lives in various economic, social and security dimensions, and destroying the human environment. This period is not weak, but it is expanding, and if it is not controlled, it will pose significant and dangerous social harms to society.

Introduction: Healthy and nutritional habits are formed and consolidated during adolescence. So this research has been done in Ardakan-Yazd province on high school students' attitude to fast food use. Methods: In this cross-sectional descriptive study, 200 students have been chosen by stratified sampling method and the data was collected by a questionnaire which approved its reliability and validity. All the descriptive data has been analyzed by SPSS 16 software through Chi-square experiment and ANOVA tests.  Results: The results of the experiment determined that 55% of the students were female, and 93% were single. The students' BMI was as follow: 22% thin (BMI< 18.5) 56% normal (18.5≤ BMI< 25) 14.5% overweight (25≤ BMI< 30) 6.5% fat (obese) (BMI ≥30).The female has a positive attitude to fast foods (P= 0.03). The mean attitude score for eating fast food in 17-18 years old group was more than 15-16 years old students (P= 0.001). The mean attitude score also showed that the single students were more eager to eat fast foods than the married students (P= 0.001) Conclusion: Most of the people who use fast foods are low educated, teenagers, youth and singles. On the other hand, social media like TV and radio and family has a significant effect on correct nutritional habits. So improving family's attitudes and educating students and teachers by social media can help in transferring data to the students and their teachers.