Intended for healthcare professionals

Rapid response to:

Editorials

Public health benefits of strategies to reduce greenhouse gas emissions

BMJ 2009; 339 doi: https://doi.org/10.1136/bmj.b4952 (Published 25 November 2009) Cite this as: BMJ 2009;339:b4952

Rapid Response:

Climate Change Data Deserves Rigorous Analysis

Over the past few years there has been a huge amount published in medical journals regarding climate change. Recent articles in the BMJ (1,2) and the series in the Lancet (3) have once again called on doctors to take a lead in takling climate change and once again data demstrating that global temperatures are rising or that greehouse gases are primarily responsible are not presented. I presume that this is because such data are felt to be beyond scrutiny but this is a dangerous approach in such a politically and economically charged topic.

The University of East Anglia’s Climate Research Unit was forced to admit this week that its raw data showing a rise of global temperatures of 0.8 oC over the past 157 years was destroyed in the 1980s. This was admitted only after a Freedom of Information Act request that bears a similarity to the recent forced revalations regarding the origional trials on selective seratonin re-uptake inhibitors. The significance of this is that the Climate Research Unit’s processed data are one of the main pieces of evidence used by the Intergovernmental Panel on Climate Change. If these data were in relation to drug trials then there would be uproar in the medical press, but I suspect that this news will pass with little more than a whimper.

Heavily processed climate change data is presented without a hint of discent and due to the continual bombardment we receive from the mainstream media we swallow the editorial conclusions unquestioning. I am not trying to deny that climate change may be a real phenomonen or that it may contribute to significant morbidity and mortality on a global scale, but I would like to see the fundamental climate change data presented in medical journals and examined with appropriate acaedemic rigor.

Through out the history of medicine there have been many treatements and medications that anacdotally have been thought to work but have only been found to be seriously flawed on detailed analysis of raw data. This is behind the impitus to have all clinical trials registered and have raw data stored in real time.

As I strive to practice evidence based clinical medicine I would like to know that I am equally informed on public health matters. We would not accept such a paucity of data from a clinical trial so we should resist doing so from other sources; no matter how powerful the organisation, how well meaning their stated intentions and how much we would like to believe.

1. Griffiths J, Rao M,. Public heath benefits of strategies to reduce greenhouse gas emissions. What’s good for climate is good for health. BMJ 2009; 339: b4952

2. Roberts I. Climate Change: Is public health up to the job? BMJ 2009; 339: b4947

3. Public heath benefits of strategies to reduce greenhouse gas emissions. Lancet 2009; published online 25 November; doi:10.1016/S0140-6736

Competing interests: None declared

Competing interests:

01 December 2009
Christopher N Floyd
ST1 Acute Medicine
St Thomas' Hospital, SE1 7EH