Background Sleep deprivation is widely recognized as a potential contributor to childhood obesity. However, few studies have addressed this issue in low-income settings. The aim of this study was to determine the association of both sleep duration and sleep quality with overweight/obesity among adolescents of Bangladesh. Methods A cross-sectional study was conducted in four randomly selected schools in Gazipur, Bangladesh, from May to August 2019. Using a self-administered semi-structured questionnaire, data on sleep duration and sleep quality were collected from 1,044 adolescents between 13 and 17 years of age. The body mass indices of the study participants were evaluated using their objectively-assessed anthropometric measurements (weight and height). Multilevel logistic regression was used for data analysis. Results The prevalence of underweight, overweight and obesity in adolescents in this study were 14.9, 18 and 7.1%, respectively. More than 15% of the students reported sleep disturbance and poor sleep quality. After adjusting for confounders, reduced (<7 h/day) total sleep duration (OR=1.73, 95% CI=1.21-2.47), weekend sleep duration (OR=1.46, 95% CI=1.00-2.12), and night sleep duration (OR=1.55, 95% CI=1.06-2.28) were found to be significantly associated with overweight or obesity in Bangladeshi adolescents. Similarly, significant positive associations were evident between short duration of total sleep (OR=0.33, 95% CI=0.20-0.54), weekday sleep (OR=0.55, 95% CI=0.35-0.84), weekend sleep (OR=0.53, 95% CI=0.31-0.89), and night sleep (OR=0.56, 95% CI=0.36-0.87), and underweight in study participants. Adolescents with short sleep duration were found less likely to be underweight and more likely to be overweight/obese. Conclusions Study findings denoted short sleep duration to be associated with overweight/obesity and underweight among adolescents of Bangladesh. Adequate sleep may therefore serve as an effective obesity prevention strategy in the growing stages.

Background In Bangladesh, safely managed sanitation (SMS) coverage is low, and diarrheal disease is a significant health problem. This study estimated the inequality in access to SMS facilities at the national and sub-national levels and assessed the prevalence of diarrheal diseases in connection with these improved facilities. Methods Data were extracted from the Bangladesh Demographic and Health Survey, conducted during 2017–2018. SMS was defined as using an improved sanitation facility, which designed to hygienically separate excreta from human contact and include the use of a flush toilet connected to piped sewer system, septic tank, ventilated improved pit latrine, pit latrine with a slab, and composting toilet. The slope index of inequality (SII) and multi-level regression models were used for inequality and risk factors of SMS respectively. Results The national coverage of SMS was 44.0% (45.3% and 43.5% in urban and rural areas, respectively). At the sub-national level, the lowest and highest coverage of SMS was observed in Mymensingh (32.9%) and Chittagong (54.1%) divisions, respectively. The national level SII indicated that wealthy households had access to higher SMS by 60.8 percentage points than poor households. Additionally, greater inequality was observed in rural areas, which was 71.9 percentage points higher in the richest households than in the poorest households. The coverage gap between the rich and poor was highest in the Sylhet division (85.3 percentage points higher in rich than in poor) and lowest in Dhaka (34.9 percentage points). Old and highly educated household heads and richest households had better access to higher levels of adequate sanitation. After adjusting for confounding variables, the prevalence of diarrheal disease was 14.0% lower in the SMS user group than in their counterparts. Conclusion Substantial inequalities in access to SMS exist at both national and sub-national levels of Bangladesh, with the prevalence of diarrhea being lower among SMS users. These findings may help to prioritize resources for reducing inequality and expanding the coverage of improved sanitation in Bangladesh.

Background: The development of improved health and nutrition in adulthood is significantly influenced by early nutrition. It is, however, almost ever investigated how to determine the nutritional condition of Bangladeshi children using anthropometric measurements including height, weight, biepicondylar width of the humerus and femur, BMI, and BSA.Methods: A descriptive cross-sectional study was conducted among 400 government elementary school students aged between 9 and 12 years in Dhaka, Bangladesh. Data was collected using a semi-structured questionnaire and analyzed using SPSS.Results: For the B1 and B2 groups, heights ranged from 124.00 to 151.00 cm and 129.00 to 157.00 cm, respectively. Height ranges for the C1 and C2 groups were respectively 129.50-153.00 cm and 129.00-160.00 cm. The B2 study group had a greater weight than the B1 study group (p<0.001), where C2 was heavier than the C1 research group (p<0.001). The A1 study group's biepicondylar width of the humerus was greater than the A2 study group's (p<0.05) and biepicondylar humerus width was greater in the B2 study group compared to the B1 study group (p<0.05). On the other hand, the B1 study group's biepicondylar femur width was higher than the B2 study group (p<0.05). The B2 group's body surface area was larger than the B1 study group's (p<0.001) and body surface area of C2 group was greater than C1 study group (p<0.001).Conclusions: Analyses of body composition and anthropometric measurements suggest that children and adolescents' nutritional status was below the reference requirement, according to the results of the current study.

Background: Tobacco smoking is one of the leading causes of preventable morbidity and mortality in the world, and is responsible for many premature deaths. The prevalence of smoking and smoking-related mortality are still high in developing and low-income countries. This survey was aimed to determine knowledge, perception and practices of tobacco smoking behavior in the undergraduate students of Bangladesh University of Health Sciences, Bangladesh.Methods: A descriptive type of cross-sectional study was conducted among the Health Sciences students during January 2018. A self-administered semi-structured questionnaire was used for data collection from 260 undergraduate students. Data was analyzed using SPSS version 25 (Statistical Package for Social Studies).Results: The prevalence of overall current tobacco smokers was 12.3% (21.2% for males and 0.9% for females). Nonsmokers had a better knowledge than smokers regarding smoking as a risk factor for lung cancer (98.4%; versus 92.9%; p=0.038), association between second hand smoke and serious illness (94.2% versus 82.9%; p<0.001) and likelihood of dying earlier than nonsmokers (84.2% versus 61.4%; p<0.001). In general, students had positive antismoking perception.Conclusions: Despite having a good understanding of the detrimental effects of tobacco smoking, smoking prevalence among students at Bangladesh University of Health Sciences is high. To reduce smoking among university students, effective smoking prevention and cessation intervention programs are necessary.