Publications by authors named "Alex G Stewart"

Background: Mental, neurological, and substance-use disorders cause medium to long term disability in all countries. They are amenable to treatment but often treatment is only available in hospitals, as few staff feel competent to give treatment. The WHO developed the "Mental Health GAP" (mhGAP) course to train non-specialist clinical staff in basic diagnosis and treatment.

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  • - Atmospheric particulate matter (PM) is responsible for 3.7 million deaths annually and can harm all body organs, highlighting the critical relationship between air quality and health.
  • - Over half of the global population lives in cities, raising concerns about PM emissions; however, knowledge about urban PM exposure is limited to data collected since the 1990s.
  • - Researchers in Merseyside, England, reconstructed 200 years of air pollution records from urban pond sediments, revealing a shift from coarse soot emissions in the mid-20th century to finer combustion-derived PM post-1980, which reflects changes in urban development and has implications for understanding long-term pollution exposure.
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Bias against left-handers is well-documented and seen in the etymology of "left" and "right" in most languages. The subject of this study, Ehud, lived between the exodus of the Hebrew slaves from Egypt and the establishment of the Israelite kingdom (c1200-1000 BC), at the transition between the Late Bronze Age and Iron Age 1. His left-handedness was crucial to his deliverance of the proto-nation from tyranny, recorded in Judges in the Hebrew Bible.

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Iodine and selenium deficiencies are common worldwide. We assessed the iodine and selenium status of Gilgit-Baltistan, Pakistan. We determined the elemental composition (ICP-MS) of locally grown crops (n = 281), drinking water (n = 82), urine (n = 451) and salt (n = 76), correcting urinary analytes for hydration (creatinine, specific gravity).

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While fundamental research into key mechanisms and interactions is important, the practical investigations that scientists also undertake have additional considerations, since the results are applicable in the real world but need disseminating in a way that reaches the intended audience. Worldwide, rapid population growth produces multiple pressures on land, meaning agriculture must become more efficient and productive. Other pressures on farmers are also increasing: to meet environmental quality standards, to follow legislation about application of chemical products, to remain financially viable against uncertain markets, and more.

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Mining continues to be a dangerous activity, whether large-scale industrial mining or small-scale artisanal mining. Not only are there accidents, but exposure to dust and toxins, along with stress from the working environment or managerial pressures, give rise to a range of diseases that affect miners. I look at mining and health from various personal perspectives: that of the ordinary man (much of life depends on mined elements in the house, car and phone); as a member of the Society for Environmental Geochemistry and Health (environmental contamination and degradation leads to ill health in nearby communities); as a public health doctor (mining health is affected by many factors, usually acting in a mix, ranging from individual inheritance-genetic makeup, sex, age; personal choices-diet, lifestyle; living conditions-employment, war; social support-family, local community; environmental conditions-education, work; to national and international constraints-trade, economy, natural world); as a volunteer (mining health costs are not restricted to miners or industry but borne by everyone who partakes of mining benefits-all of us); and as a lay preacher (the current global economy concentrates on profit at the expense of the health of miners).

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Safe waste management protects hospital staff, the public, and the local environment. The handling of hospital waste in Bwindi Community Hospital did not appear to conform to the hospital waste management plan, exhibiting poor waste segregation, transportation, storage, and disposal which could lead to environmental and occupational risks. We undertook a mixed-methods study.

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Low-cost community-based interventions to improve infant health potentially offer an exciting means of progressing toward the Sustainable Development Goals (SDGs). However, the feasibility of such interventions in low-income settings remains unclear. Bwindi Community Hospital (BCH), Uganda implemented a 3-year nurse-led community project to address child-health issues.

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  • Out-of-pocket healthcare costs force many poor individuals into poverty, hindering efforts for universal healthcare as outlined by the World Health Organization.
  • Community-based health insurance (CBHI) has been shown to enhance healthcare access by mitigating financial risks, leading to lower under-5 mortality rates.
  • A study of the eQuality Health Bwindi CBHI scheme in Uganda revealed that having health insurance significantly reduced child mortality and increased the likelihood of receiving healthcare services, demonstrating the benefits of CBHI in rural areas.
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The harmful use of alcohol is a growing global public health concern, with Sub-Saharan Africa at particular risk. A large proportion of adults in Uganda consume alcohol and the country has a high prevalence of alcohol use disorders (AUD), almost double that for the African region as a whole. Bwindi Community Hospital, in rural western Uganda, recently introduced a program of screening, diagnosis and management of AUD and we assessed how this worked.

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A multidisciplinary approach to research affords the opportunity of objectivity, creation of new knowledge and potentially a more generally acceptable solution to problems that informed the research in the first place. It increasingly features in national programmes supporting basic and applied research, but for over 40 years, has been the arena for many research teams in environmental geochemistry and health. This study explores the nature of multidisciplinary research in the earth and health sciences using a sample selected from co-authored articles reporting research on arsenic (As) in drinking water from 1979 to 2013.

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  • Scientific understanding of environmental issues grows through observation and experimentation, but applying that science in real-world scenarios, especially in industrial regions like Merseyside, can be complex due to various land and air contamination issues.
  • To effectively address pollution, an integrated, multidisciplinary response is necessary, taking into account the diverse needs of affected groups and broader contexts such as historical and legislative factors.
  • The integrated approach employed in Merseyside has proven effective for managing "wicked problems"—complex, evolving issues that require adaptable and ongoing solutions.
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Objectives: To assess whether residential proximity to industrial incinerators in England is associated with increased risk of cancer incidence and mortality.

Design: Retrospective study using matched case-control areas.

Setting: Five circular regions of radius 10 km near industrial incinerators in England (case regions) and five matched control regions, 1998-2008.

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The Society for Environmental Geochemistry and Health (SEGH) is a forum for multidisciplinary interaction relating the geochemical environment to health. With national funding, SEGH identified collaborative opportunities through the MULTITUDE series of workshops (2007-2011). We reviewed the meetings by electronic questionnaire (39 % response).

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Applied research in a public health setting seeks to provide professionals with insights and knowledge into complex environmental issues to guide actions that reduce inequalities and improve health. We describe ten environmental case studies that explore the public perception of health risk. We employed logical analysis of components of each case study and comparative information to generate new evidence.

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Mixtures can be divided into simple (chemicals with comparable properties--health risk assessments on the chemicals) and complex, which can be further subdivided into defined (a reasonably distinct composition, created at a specific time and place despite dissimilar components--risk assessments on the common source) and coincidental (chemicals without similar properties or constant composition in time or space-risk assessments on the receptor). Interactions recognized are: independent action, dose addition (additivity), and potentiation (synergy and antagonism). Unpredicted outcomes need recognition.

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