Organics: Evidence of Health Benefits Lacking

摘要

Many consumers cite "health and nutri-tional concerns" as the primary reason for purchasing organic food (7). There are several hypotheses to explain why organic foods might be nutritionally superior to conventionally produced foods, including (i) the idea that nutrient uptake is enhanced because organic fertilizers release nutrients slowly, and (ii) the theory that conventional pesticides and herbicides may disrupt nutrient absorption or synthesis, potentially lowering nutrient levels in crops. However, systematic literature reviews over three decades, including a very recent one (2), have demonstrated neither consistent nor meaningful differences in nutrient levels.