The UK Food Standards Agency (FSA) recently commissioned the London School of Hygiene and Tropical Medicine (LSHTM) to carry out a systematic review of the published science comparing “putative health effects of organically and conventionally produced foodstuffs” over the last 50 years. Only studies involving the nutritional content of food which had been grown under defined organic regimes, and tested for a clear direct relevance to human health were included.It concluded that “because of the limited and highly variable data available, and concerns over the reliability of some reported findings, there is currently no evidence of a health benefit from consuming organic compared to conventionally produced foodstuffs.” This conclusion was immediately sensationalised by the media into a headline which announced “Organic food is no healthier, says official study”.
The reasons for the conclusion (the actual one, not the one suggested by the press) are that the few studies available are inadequate in scope, design and execution. They don't demonstrate much about health effects of organic food, but they do demonstrate that we don't seem to know how to measure health effects of any food....
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