Applying utilitarianism and deontology in managing Bisphenol-A risks in the United States

We examine Bisphenol-A (BPA) as a case that illustrates key challenges in addressing the public health risks of consumer products in the 21st century. First, we trace growing concerns about the effects of BPA on human health, showing how regulatory approaches can exacerbate the difficulty of dealing with the unforeseen risks of chemicals in consumer products. Second, we highlight the question of who should bear the responsibility – and the cost – of rectifying or preventing unforeseen chemical risks in consumer products. Third, we discuss the challenge of substituting out a potentially hazardous chemical from consumer products in the context of well established global production chains and consumption patterns. Utilitarian and deontological ethical frameworks have influenced societal debates surrounding each of these three challenges, creating moral dilemmas for actors with different forms of moral agency – both those implicated in the production of harmful chemicals and those pursuing remedies

Undoing chemical industry lock-ins: polyvinyl chloride and green chemistry

We examine polyvinyl chloride (PVC) as one example of the ethical challenges that the chemical industry faces when putting green chemistry into practice. Green chemistry has emerged as a powerful new philosophy for designing molecules, reactions, and products to be intrinsically non-toxic and sustainable. We consider three issues: Should the chemical industry overcome the inertia of path dependent technologies and introduce safer, more sustainable technologies? What will motivate companies and their employees to practice green chemistry under conditions where changing technologies and businesses can create substantial economic, market, and technical risks? How should the precautionary principle be applied in terms of the real-world complexities of manufacturing chemicals? To do so, we look at examples of environmental and health harms in the feedstock and PVC manufacturing lifecycle stages, along with green chemistry solutions that could be employed. PVC suggests how difficult it could be to adopt green chemistry solutions; nonetheless, these solutions may make significant contributions across the chemical industry generally

Localization of type 1 diabetes susceptibility to the MHC class I genes HLA-B and HLA-A

The major histocompatibility complex (MHC) on chromosome 6 is associated with susceptibility to more common diseases than any other region of the human genome, including almost all disorders classified as autoimmune. In type 1 diabetes the major genetic susceptibility determinants have been mapped to the MHC class II genes HLA-DQB1 and HLA-DRB1 (refs 1-3), but these genes cannot completely explain the association between type 1 diabetes and the MHC region. Owing to the region's extreme gene density, the multiplicity of disease-associated alleles, strong associations between alleles, limited genotyping capability, and inadequate statistical approaches and sample sizes, which, and how many, loci within the MHC determine susceptibility remains unclear. Here, in several large type 1 diabetes data sets, we analyse a combined total of 1,729 polymorphisms, and apply statistical methods - recursive partitioning and regression - to pinpoint disease susceptibility to the MHC class I genes HLA-B and HLA-A (risk ratios >1.5; Pcombined = 2.01 × 10-19 and 2.35 × 10-13, respectively) in addition to the established associations of the MHC class II genes. Other loci with smaller and/or rarer effects might also be involved, but to find these, future searches must take into account both the HLA class II and class I genes and use even larger samples. Taken together with previous studies, we conclude that MHC-class-I-mediated events, principally involving HLA-B*39, contribute to the aetiology of type 1 diabetes. ©2007 Nature Publishing Group

Symptoms and risk factors for long COVID in non-hospitalized adults

Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection is associated with a range of persistent symptoms impacting everyday functioning, known as post-COVID-19 condition or long COVID. We undertook a retrospective matched cohort study using a UK-based primary care database, Clinical Practice Research Datalink Aurum, to determine symptoms that are associated with confirmed SARS-CoV-2 infection beyond 12 weeks in non-hospitalized adults and the risk factors associated with developing persistent symptoms. We selected 486,149 adults with confirmed SARS-CoV-2 infection and 1,944,580 propensity score-matched adults with no recorded evidence of SARS-CoV-2 infection. Outcomes included 115 individual symptoms, as well as long COVID, defined as a composite outcome of 33 symptoms by the World Health Organization clinical case definition. Cox proportional hazards models were used to estimate adjusted hazard ratios (aHRs) for the outcomes. A total of 62 symptoms were significantly associated with SARS-CoV-2 infection after 12 weeks. The largest aHRs were for anosmia (aHR 6.49, 95% CI 5.02–8.39), hair loss (3.99, 3.63–4.39), sneezing (2.77, 1.40–5.50), ejaculation difficulty (2.63, 1.61–4.28) and reduced libido (2.36, 1.61–3.47). Among the cohort of patients infected with SARS-CoV-2, risk factors for long COVID included female sex, belonging to an ethnic minority, socioeconomic deprivation, smoking, obesity and a wide range of comorbidities. The risk of developing long COVID was also found to be increased along a gradient of decreasing age. SARS-CoV-2 infection is associated with a plethora of symptoms that are associated with a range of sociodemographic and clinical risk factors