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Informal electronic waste (e-waste) dismantling activities contribute to releasing hazardous compounds in the environment and potential exposure to humans and their health. These hazardous compounds include persistent organic pollutants (POPs), polycyclic aromatic hydrocarbons (PAHs) and heavy metals. This review searched papers addressing hazardous compounds emitted from e-waste recycling activities and their health effects in Vietnam. Based on the keywords searched in three electronic databases (PubMed, Psych Info, and Google scholar), we found 21 relevant studies in Vietnam. The review identifies extensive e-waste dismantling activities in Vietnam in the northern region. To measure the environmental exposure to hazardous compounds, samples such as e-waste recycling workshop dust, soil, air, and sediments were assessed, while human exposure levels were measured using participants' hair, serum, or breast milk samples. Studies that compared levels of exposure in e-waste recycling sites and reference sites indicated higher levels of PBDEs, PCBs, and heavy metals were observed in both environmental and human samples from participants in e-waste recycling sites. Among environmental samples, hazardous chemicals were the most detected in dust from e-waste recycling sites. Considering both environmental and human samples, the highest exposure difference observed with PBDE ranged from 2-48-fold higher in e-waste processing sites than in the reference sites. PCBs showed nearly 3-fold higher levels in e-waste processing sites than in reference sites. In the e-waste processing sites, age-specific higher PCB levels were observed in older recycler's serum samples. Among the heavy metals, Pb was highly detected in drinking water, indoor soil and human blood samples. While high detection of Ni in cooked rice, Mn in soil and diet, Zn in dust and As in urine were apparent. Exposure assessment from human biomonitoring showed participants, including children and mothers from the e-waste processing areas, had higher carcinogenic and non-carcinogenic risks than the reference sites. This review paper highlights the importance of further comprehensive studies on risk assessments of environmentally hazardous substances and their association with health outcomes at e-waste processing sites. [ABSTRACT FROM AUTHOR]

Background: Childhood asthma is known to be affected by a range of factors, including conditions in the indoor environment. While flooring material influences indoor air conditions, the potential association between flooring materials and childhood asthma remains poorly understood in Japan. Objective: The present study aims to assess the association between childhood asthma incidence and the primary flooring material with the ongoing prospective nationwide birth cohort data of the Japan Environment and Children's Study (JECS). Methods: The JECS gathered data on mothers and children through 15 Regional Centres across Japan. The present study assessed flooring materials used in the home and asthma incidence at age four among children born between 2011 and 2014. We implemented logistic regressions, setting asthma incidence among the children as the outcome and home floor type as the exposure. Additional analyses were conducted, stratifying the home's age as a proxy for tatami age, to assess whether the potential effect of tatami flooring on asthma risk is influenced by its age. Results: The present study included total of 75,629 infants. For tatami flooring, the main multivariable regression and additional sub-group regression for homes over ten years old produced odds ratios of 1.09; 95% Confidence Interval (CI) [1.01–1.17] and 1.10; 95% CI [1.00–1.21] compared with flooring, respectively. Conclusion: These results imply that exposure to tatami flooring, particularly in older homes, may be associated with childhood asthma incidence. Moreover, our study highlights the importance of evaluating the relationship between regional and cultural differences between asthma and flooring materials. [ABSTRACT FROM AUTHOR]

Lead industries are one of the major sources of environmental pollution and can affect human through different activities, including industrial processes, metal plating, mining, battery recycling, etc. Although different studies have documented the various sources of lead exposure, studies highlighting different types of industries as sources of environmental contamination are limited. Therefore, this narrative review aims to focus mainly on lead industries as significant sources of environmental and human contamination. Based on the keywords searched in bibliographic databases we found 44 relevant articles that provided information on lead present in soil, water, and blood or all components among participants living near high-risk areas. We presented three case scenarios to highlight how lead industries have affected the health of citizens in Vietnam, Uruguay, and Malaysia. Factories conducting mining, e-waste processing, used lead-acid battery recycling, electronic repair, and toxic waste sites were the primary industries for lead exposure. Our study has shown lead exposure due to industrial activities in Vietnam, Uruguay, Malaysia and calls for attention to the gaps in strategic and epidemiologic efforts to understand sources of environmental exposure to lead fully. Developing strategies and guidelines to regulate industrial activities, finding alternatives to reduce lead toxicity and exposure, and empowering the public through various community awareness programs can play a crucial role in controlling exposure to lead. [ABSTRACT FROM AUTHOR]

Aim: We developed a self‐assessment scale—Older Adults' Perceptions of Community‐based Connectedness with People—to assess older adults' comprehensive perceptions of their connectedness with others in the community. A specific aim of this study is to evaluate the reliability and validity of this scale. Methods: Participants consisted of 1000 men and women aged 65 years or older, living in Sapporo, Hokkaido, Japan. Factorial validity was assessed using exploratory and confirmatory factor analysis, while concurrent validity was assessed using correlation analysis. Reliability was confirmed by Cronbach's α coefficient using the internal consistency method, and the stability coefficient was confirmed using the test–retest method. Results: Responses were received from 380 participants, and 358 participants who responded to all items were included in the analysis. The developed scale comprised 22 items with three factors: "Perception of Inclusion" (α =.947), "Perception of Reciprocity through Reception" (α =.937), and "Perception of Reciprocity through Provision" (α =.910). Correlation analyses indicated that concurrent scales were positively correlated with Ikigai and negatively correlated with loneliness on the total scale. The model fit was comparative fit index = 0.933, goodness‐of‐fit index = 0.854, adjusted goodness‐of‐fit index = 0.818, and root mean square of approximation = 0.081. The stability coefficient of the total scale scores was 0.875 (95% CI: [0.830, 0.908]). Conclusions: The developed scale had adequate reliability and validity. The perceptions of connectedness measured using this scale can be used by public health and nursing care professionals to prevent loneliness and isolation among older adults living in the community. [ABSTRACT FROM AUTHOR]