823 e-Letters

  • Salt: the need for government action
    Norman J. Temple

    Brinsden and colleagues1 describe the decrease in the salt content of bread sold in the UK. They see this as evidence of success for the policy of voluntary agreements with the food industry. In actuality, a careful assessment of the facts and figures given in their paper reveals the failure of the policy.

    Between 2001 and 2011 salt intake by adults in the UK fell by about 15%, i.e., from 9.5 to 8.1 g/day. The t...

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  • Dietary alpha-linolenic acid intake and prostate cancer risk: A dose-response analysis of observational studies
    Long Zhai

    Abstract Alpha-linolenic acid (ALA) consumption has been linked to risk of prostate cancer theoretically, but the findings were conflicting from observational studies. Results from recent meta-analysis suggested a small risk, moderate protective and no effect of alpha-linolenic acid consumption on prostate cancer risk. However, the relationship, if exists, between alpha-linolenic acid consumption and prostate cancer ris...

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    Roger W. Byard

    Roger Byard, Professor of Pathology, The University of Adelaide, SA, Australia; John Hunsaker, Forensic Pathologist, University of Kentucky, Frankfort, Ky, United States.

    Dear Sir,

    We read with interest the recent analysis of five large case-control studies involving sudden infant death syndrome (SIDS) with respect to bed sharing [1]. Our concern is that the possibility of accidental suffocation was n...

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  • Concerning conclusions that may negatively impact on safe sleeping, successful breastfeeding, parent wellbeing and open communication between health professionals and parents
    Catherine M. Fetherston

    Dear Editor,

    The paper published in your journal by Carpenter et al [1], claims to resolve uncertainties associated with bedsharing and SIDS. We believe however, it does little other than fuel further confusion in the minds of parents and the health professionals charged with providing them with information and support.

    As outlined in other letters the authors chose to use a selection of older studies...

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  • More questions than answers
    Herbert Renz-Polster

    Dear Editor,

    This publication [1] is confusing to parents and physicians because it draws far reaching conclusions from unconvincing data.


    In our opinion, the validity of this analysis is threatened by selection bias, imputation bias and presentation bias. We think that the conclusions drawn from this study are not generalizable and that many current issues pert...
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  • Re:Omega-3, omega-6 and vitamin treatment for relapsing-remitting multiple sclerosis
    Ioannis S. Patrikios

    Response by the authors:

    On behalf of the PLP10 study co-authors (1), Ioannis S Patrikios, George N Loukaides and Mario C Pantzaris, I report our opinion and response to the e-letter "Omega-3, omega-6 and vitamin treatment for relapsing-remitting multiple sclerosis" by Oivind Torkildsen. We really appreciate the comments by Dr Oivind Torkildsen (2) and we thank him for giving us the chance to clarify more on th...

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  • Sedentary Behaviour in adults and cardiovascular risk: Letter to editor
    Simran Kaur

    Cardiovascular risk study was carried by Heinonnen et al to establish an association between sedentary lifestyle and cardiovascular risk in young adults. Although due to its cross sectional design, it cannot be extrapolated to address the causality of findings. Nevertheless, it is indeed a good piece of research wherein all confounders except television viewing, which is a growing practice, are accounted for. However, thi...

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  • Re:Bed sharing when parents do not smoke: is there a risk of SIDS? An individual level analysis of five major case-control studies
    Paul N Goldwater

    In their paper1 Carpenter et al. conclude that bed-sharing of infants under 3 months with their parents even when the latter did not smoke and had no other risk factors the adjusted odds ratio for SIDS was 5.1 (2.3 to 11.4). This risk was greatly increased when the parents smoked, took alcohol or drugs. These findings are not surprising and confirm that co- sleeping is particularly dangerous for babies under three months of...

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  • Re: Bed sharing when parents do not smoke: is there a risk of SIDS?
    Charlotte K. Russell

    Charlotte K Russell - Research Associate, Department of Anthropology, Durham University

    Helen L Ball - Professor of Anthropology, Department of Anthropology, Durham University; Director of the Parent-Infant Sleep Lab

    Dear Editor,

    This publication analyses SIDS-risks associated with bed-sharing under different circumstances using data from five historical SIDS studies. Unlike previous analyse...

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  • Inadequate data, too many confounders and a ridiculous analogy!
    Sara L Macbay

    I am appalled that this paper managed to get past peer review and reach publication. The authors define 'breastfed' as 'partially or completely breastfeeding at time of death or interview'. This implies there were babies entered into the breastfed group who were receiving formula in quantities that are unknown. What exactly is partially breastfed? Is this one, two, three bottles of formula per day? One breastfeed per da...

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