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“A single study is not enough to establish a link between diet and health”

By Anne Prigent (Le Figaro)

Lhe chocolate improves memory, coffee increases life expectancy but also the risk of lung cancer, the Mediterranean diet limits the progression of prostate cancer… Almost every week, the media report on studies scientists highlighting the health benefits or harms of a particular food or diet. Scientific publications that often seem to justify everything and its opposite …

These contradictions are in reality not really surprising: indeed, the evaluation of the effect of a food has nothing to do with that of a drug. It cannot be based on a randomized study (which validates a result based on a randomly selected sample) controlled by an arm placebo, a method considered as the “gold standard” for judging the effectiveness of a treatment.

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