2008 - Bad Science by Ben Goldacre

Author:Ben Goldacre
Format: epub, mobi
Published: 2008-03-26T16:00:00+00:00

≡ Oh, and he works for the pill company BioCare as their Head of Education and Science (I may have mentioned that the company is 30 per cent owned by pharmaceuticals company Elder). In fact, in many respects he has spent his whole life selling pills. His first job on leaving York with a 2:2 in psychology in the 1970s was as a vitamin-pill salesman for the pill company Higher Nature. He sold his most recent pill-selling company, Health Products for Life, for half a million pounds in 2007 to BioCare, and he now works for that company.

My whole purpose in writing this book is to teach good science by examining the bad, so you will be pleased to hear that the very first claim Holford makes, in the very first paragraph of his key chapter, is a perfect example of a phenomenon we have already encountered: ‘cherry-picking’, or selecting the data that suits your case. He says there is a trial which shows that vitamin C will reduce the incidence of colds. But there is a gold-standard systematic review from Cochrane which brings together the evidence from all twenty-nine different trials on this subject, covering 11,000 participants in total, and concluded that there is no evidence that vitamin C prevents colds. Professor Holford doesn’t give a reference for his single, unusual trial which contradicts the entire body of research meticulously summarised by Cochrane, but it doesn’t matter: whatever it is, because it conflicts with the meta-analysis, we can be clear that it is cherry-picked.

Holford does give a reference, immediately afterwards, for a study where blood tests showed that seven out of ten subjects were deficient in vitamin B. There is an authoritative-looking superscript number in the text. Turning to the back of the book, we find that his reference for this study is a cassette you used to be able to buy from his own Institute for Optimum Nutrition (it’s called The Myth of the Balanced Diet). We then have a twenty-five-year-old report from the Bateman Catering Organisation (who?), apparently with the wrong date; a paper on vitamin B12; some ‘experiment’ without a control reported in a 1987 ION pamphlet so obscure it’s not even in the British Library (which has everything). Then there is a bland statement referenced to an article in the Institute for Optimum Nutrition’s Optimum Nutrition Magazine, and an uncontroversial claim supported by a valid paper—the children of mothers who have taken folic acid during pregnancy have fewer birth defects, a well-established fact reflected in Department of Health guidelines—because there has to be a grain of common-sense truth in the spiel somewhere. Getting back to the action, we are told about a study on ninety schoolchildren who get 10 per cent higher IQ scores after taking a high-dose multivitamin pill, sadly without a reference, before a true gem: one paragraph with four references.

The first is to a study by the great Dr R.K. Chandra, a disgraced researcher whose papers have been discredited and retracted, who

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