Nor is it clear that organic saves the environment. A biochemist at Edinburgh University, Anthony Trewavas, has shown that organic uses more energy per tonne of food produced because the yields are lower. Also, because it requires more land – roughly twice as much as conventionally grown food – it means there is less available to be left unfarmed for biodiversity.
As for the oft-cited claim that organic food stops you ingesting tons of deadly cancer-causing pesticides – this got short shrift from Sir John Krebs of the Food Standards Agency. He wrote in Nature magazine: "A single cup of coffee contains natural carcinogens equal to at least a year\’s worth of carcinogenic synthetic residues in the diet."
Something of a scam then. But then we knew that too.