33 e-Letters

published between 2013 and 2016

  • Hepatitis C elimination by 2030 is feasible in developed countries but challenging in resource poor developing countries
    Gee Yen Shin

    The World Health Organisation's setting of global viral hepatitis elimination targets, focused on hepatitis B & C, is most welcome1. In their commentary article, Hellard, Sacks-Davis & Doyle describe strategies by which hepatitis C elimination by 2030 can be achieved by a combination of direct acting antiviral drugs against hepatitis C, opioid substitution therapy and needle and syringe programmes...

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  • A missed opportunity? Fluoridation and hypothyroidism - correlation or causation.
    Douglas W Cross

    The analysis of data on the prevalence of hypothyroidism in areas with different concentrations of fluoride in the public drinking water supplies, by workers at the University of Kent,[1] is interesting but by no means conclusive. The authors rightly emphasise that their findings do not prove that fluoridation causes people to develop the condition,but only that there is a clear correlation. In fact this study raises m...

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  • SEP, Increased Incidence of Brain Cancer, and Potential Role of Mobile Phone Usage.
    Sarah J Scott

    In relation to the reported findings in this study of a correlation between higher socioeconomic position and incidence of brain tumour, specifically giloma and acoustic neuroma, among a cohort of Swedish-born residents, the authors postulate 'completeness of cancer registration' and 'detection bias' as a potential explanation.

    This seems unlikely, especially given the progressive nature of brain tumour pathology...

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  • Working longer, working better?
    Alexis Descatha
    Sir, We have read with particular interest the paper by Wu C. et al. on the association of retirement age with mortality among older adults in a large US study.[1] We need deeper understanding of the association found between a 1-year age increment in the 2,956 participants and an 11% lower risk of all-cause mortality (95% confidence interval 8-15%). The authors conclude that "early retirement may be a risk factor for mortality a...
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  • Early life social conditions and adult cancers: a fundamental research question
    Michelle Kelly-Irving

    We commend the authors for taking the hypothesis that cancer may have its roots in early life social conditions seriously [1]. Social inequalities exist for many cancer types and are usually attributed to differences in lifestyles and behaviours. Thus, attempts at primary prevention are often confined to relatively proximal disease risk factors at the individual level.

    Cancer development has mainly been conside...

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  • Measuring the impact of green space interventions in deprived neighbourhoods on physical activity and health
    Karine Bernard

    Droomers et al. examined the association between green space interventions in Dutch deprived neighborhoods and short-term impacts on physical activity (PA) and perceived general health (PGH) among adults. The authors reported an absence of short-term positive effects on PA and health from improvements in green space in deprived neighbourhoods.[1]

    The authors made significant efforts to control for the clusterin...

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  • Response to: Ribeiro, et al. "Where do people live longer and shorter lives? An ecological study of old-age survival across 4404 small areas from 18 European countries"
    Katharine Timpson

    Ribeiro and colleagues' identify high mortality rates at older ages in the post-industrial UK areas of Merseyside and West Central Scotland (WCS). They suggest that poverty and a lack of social cohesion may be part of the explanation for this finding (1). Merseyside and WCS are characterised by wide intra-regional variation in mortality rates compared to other deindustrialised areas across Europe, possibly reflecting grea...

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  • How stakeholder participation could increase inequities. The inverse equity hypothesis lens.
    Ramiro Manzano

    Recent review from Harris et al [1] sets the alternative hypothesis that greater degree of stakeholders participation can produce a contextually valid synthesis. Aware of the importance of stakeholders in healthcare, a null hypothesis may come to mind: Stakeholders increase inequity by biasing synthesis. Let us give you some theoretical framework. Research on public health interventions should include academic researcher...

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  • Options in Breech Delivery: the woman's choice?
    Rachel A Cichosz

    Hehir (2015) gives an interesting account on the current trends in breech delivery and gives discusses several large studies whose findings suggest that differences in mortality between vaginal breech delivery and elective cesarean section are minimal. Considering the down sides of cesarean delivery, such as increased risks during future pregnancies and births, what is the best option for women? And who should make that...

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  • a cup of tea
    Michael E Godfrey

    It appears somewhat bizarre that authorities have ignored a widely consumed source of fluoride from tea although insisting on community water fluoridation (CWF) to reduce dental decay. Notably, black tea in commercial teabags contains significant levels of fluoride. This is especially so when sourced from Kenya with volcanic soils compounded by fluoride from superphosphate fertilisers. Mechanical harvesting then includes...

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