media

After a couple of days of fairly intensive discussion the news inevitably moved on to other topics, but a fairly clear message had been sent to NICE that the media will rapidly pick up on any divergence from the advice of the Department of Health.

What evidence is being used?

The report itself is a review of all the available evidence on the influences of certain foods and activities on cancer, as judged by a panel of internationally distinguished scientists.

On 31st October 2007 the World Cancer Research Fund (WCRF, a charity/umbrella organisation “supporting research into the role of diet and nutrition in the prevention of cancer”) issued a press release to advertise their comprehensive report on the influences of nutrition and physical activity on cancer, “Food, Nutrition, Physical Activity and the Prevention of Cancer: a Global Perspective”.

Background

Advice for pregnancy-related health issues regarding lifestyle choices has been given for a long while, so in a sense there is no true start to this story. The issues discussed here relate to the previous NICE guidelines issued in 2003, which advised caution, but not complete abstinence towards alcohol, and which did not differ too much in style and content to the advice issued by the Department of Health at the same time.

What evidence is being used?
The Department of Health has, until May 2007, issued guidelines that are similar to those of NICE; the news story has arisen out of the fact that the DoH has changed the guidelines, while NICE has not. As O’Brian notes in the BMJ [1], the new DoH advice does not rest on any new evidence, but merely on the reinterpretation of the risk associated with the already known evidence. Therefore this particular news story centres not so much on conflicting evidence supporting two different points of view, but on two different interpretations of the same evidence.

References

What should be the official advice for women about the consumption of alcohol during pregnancy?

On 11th October 2007 several news sources reported on the revised draft guidelines on antenatal care that were to be published by NICE (National Institute for Health and Clinical Excellence) in March 2008. These guidelines are reported to advise that there is “no consistent evidence of adverse effects from low-to-moderate alcohol during pregnancy (less than one drink or 1.5 units per day) but the evidence is probably not strong enough to rule out any risk.”

Why risk in the media?

No-one can be an expert in every subject. We may have left formal science teaching behind at school, or have continued through university. We may keep up to date by reading scientific periodicals and websites - or just wish we had the time to do so! But as news breaks of yet another scientific discovery, we all start with what the media have made of the story, and how they present it to us.