Ramin Heshmat

Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.

[ 1 ] - Association of Helicobacter Pylori Infection with Cardiometabolic Risk Factors among Iranian Adolescents: the CASPIAN III Study

Background: At least half the world’s population is colonized the stomach by Helicobacter pylori (H. pylori) which are a key constituent of the human microbiome. The aim of this study was to investigate the association of cardiometabolic risk factors with H. pylori infection in Iranian adolescents. Materials and Methods: The current study was conducted along with the third survey of a national ...

[ 2 ] - Determinants of Self-Perceived Health in Iranian Children and Adolescents: the CASPIAN IV Study

Background: Health status is an individual’s relative level of wellness and illness. Self-Perceived Health (SPH) is a single item considered as a health indicator for national and international survey. The aim of this study was to evaluate the SPH measure and its determinants in a National sample of Iranian children and adolescents. Materials and Methods: This National study was performed...

[ 3 ] - Association of Healthy Food Intake with Psychiatric Distress in Children and Adolescents: the CASPIAN-IV study

Background: Healthy dietary habits are known as a key factor for improving brain functions and cognitive ability in children and adolescents. The goal of this study was to evaluate the association of healthy food consumption with mental health in Iranian children and adolescents.Materials and Methods: Data were obtained from the fourth national school-based surveillance survey entitled CASPIAN-...

[ 4 ] - Prevalence of Vitamin D Deficiency according to Climate Conditions among a Nationally Representative Sample of Iranian Adolescents: the CASPIAN-III Study

Background: Sunlight is the main source of vitamin D; therefore, environmental factors might have an important role in the high prevalence of hypovitaminosis D in children. This study aimed to assess the vitamin D status according to the climate of the living area in a nationally representative sample of Iranian adolescents. Material and Methods: This nationwide cross-sectional survey was perfo...

[ 5 ] - Association of Dietary Behaviors with Physical Activity in a Nationally Representative Sample of Children and Adolescents: the CASPIAN- IV Study

Background: Nutritional health and adequate physical activity (PA), especially in childhood and grow periods, have a substantial role in health. This study assessed the association of dietary behaviors (main courses and snacks intake) with PA in children and adolescents. Materials and Methods: Using multistage random cluster sampling method, a representative sample of 14,880 school students wer...

[ 6 ] - Is Meal Frequency Associated with Mental Distress and Violent Behaviors in Children and Adolescents? the CASPIAN IV Study

Background: This study aimed to assess the relationship between meal frequency with mental distress and violent behavior among a nationally representative sample of Iranian children and adolescents. Materials and Methods: The participants of this national study were 14,880 Iranian students with 6 to 18 years of age. They were selected from urban and rural regions of Iran by multi-stage cluster ...

[ 7 ] - بررسی ارتباط بین ناامنی غذایی با شاخص سازگاری نوجوانان دبیرستانی شهرستان بابلسر در سال 1394: مطالعه‌ی مورد-شاهد

سابقه و هدف: شیوع اختلالات روانی در جوامع درحال‌توسعه بین ۲۰ تا ۵۰ درصد تخمین زده شده است. در برخی از پژوهشها ناامنی غذایی و گرسنگی با کاهش عملکرد روانی و مشکلات رفتاری مرتبط بودند. هدف این مطالعه بررسی ارتباط بین سازگاری نوجوانان با ناامنی غذایی خانوادههای آنها است. مواد و روش‌ها: این مطالعه مورد-شاهد بر روی ۲۴۶ دانشآموز دبیرستانی و مادرانشان در سال ۱۳۹۴ انجام شد. پرسشنامه سازگاری دانشآ...

[ 8 ] - بررسی وضعیت استخوانی در افراد دارای آسیب نخاعی

Background: Bone loss in spinal cord injured patients is common problem. Based on high prevalence of osteoporosis in these patients, this study was designed for the first time to evaluate bone mineral density and related markers in spinal cord injured patients. Methods: Inpatients with chronic spinal cord injury who was referring to the clinic of spinal cord injury research center were recru...

[ 9 ] - Regional disparity in hygienic behaviors of Iranian children and adolescents: The CASPIAN-IV study

Background: This study aimed to assess the pattern of hygienic behaviors of Iranian children and adolescents at national and sub-national levels according to the socioeconomic status (SES) of their living region.   Methods: Data were obtained from the fourth national school-based surveillance survey entitled, “CASPIAN-IV study” (2011-2012). It was conducted among 14,880 stud...

[ 10 ] - The relationship of serum vitamin D and Zinc in a nationally representative sample of Iranian children and adolescents: The CASPIAN-III study

Background: Vitamin D (VitD) deficiency is a common worldwide problem. Some previous studies have shown that both Zinc (Zn) and VitD deficiency are prevalent in Iran. This study aimed to assess the relationship of serum Zn and vitamin D levels in a nationally representative sample of Iranian children and adolescents.   Methods: This case-control study was conducted as a sub-study of a s...

[ 11 ] - Economic inequality in nutritional knowledge, attitude and practice of Iranian households: The NUTRI-KAP study

Background: Improper nutritional knowledge is one of the most important causes of nutritional problems, which can affect practice and cause more complications. The aim of this study was to assess the association between nutritional knowledge, attitude and practice (KAP) of Iranian households with socioeconomic status (SES).   Methods: The study population was 14,136 households (57 clust...

[ 12 ] - Level of physical activity and screen time among Iranian children and adolescents at the national and provincial level: The CASPIAN-IV study

Background: There are few epidemiological reports on adherence to physical activity (PA) and screen-time (ST) recommendations among Iranian children and adolescents at the provincial level. We used nationally representative data to provide recent prevalence estimates of Iranian children who met the recommendations for PA and ST.   Methods: This nationwide study was conducted among 14,88...

[ 13 ] - Food Insecurity is Related to Women\'s Mental and Physical Health in Babolsar, Iran

Background and Objectives: Food insecurity has some adverse effects on health. Studies show that, there is a significant relationship between poor mental and physical health and food insecurity among low-income households. The purpose of this study is to investigate the relationship between household food insecurity and physical and mental health in Iranian women with high school age children. ...

[ 14 ] - Association of Sedentary Leisure Time with School Performance in Children and Adolescents: the CASPIAN-V Study

Background: Leisure time activities might be associated with school performance. This study aimed to investigate the association between leisure time variables, including television and computer using time, homework time and cell phone using time, with children’s school performance in a nationally representative sample of Ira...

[ 15 ] - Promoter Methylation of Four Tumor Suppressor Genes in Human Papillary Thyroid Carcinoma

Background & Objective: Papillary thyroid cancer (PTC) is considered to be the most common type of thyroid malignancies. Epigenetic alteration, in which the chromatin conformation and gene expression change without changing the sequence of DNA, can occur in some tumor suppressor genes and oncogenes. Methylation is the most common type of epigenetic alterations that can be an ex...