As the total global population continues to rise and economic growth drives a transition towards more resource-intensive diets, a growing number of consumers are concerned with how to reduce the environmental impact of their dietary choices. Consumers often see organic food as an effective way to reduce their impact: surveys reveal that regardless of geographic location, the primary motivations for organic food purchases are health1 and environmental concerns.2Furthermore, consumers are often willing to pay more for organic products – some studies indicate a willingness-to-pay of up to 100 percent above standard prices.3 But is this a wise choice? Is going organic really the best way to reduce the environmental impact of our diets?
Before we explore the relative impacts of organic vs. conventional agriculture, it is worth clarifying their definitions. Organic agriculture refers to the farming of crops or livestock without the use of synthetic inputs, including synthetic fertilizers, pesticides, plant growth regulators, nanomaterials and genetically-modified organisms (GMOs).4 Note that organic does not necessitate 'chemical-free' or 'pesticide-free'; chemicals are often used in organic farming, however these cannot be synthetically manufactured, with the exception of a small number which have been approved by the National Organic Standards Board.5 Conventional (sometimes termed 'industrial') farming is therefore any agricultural system which uses one or more of the above synthetic inputs...
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