Organic food and eating local produce (the locavore movement) are popular ideas because we feel that we should do all we can to contribute to a better environment. It would appear that neither organic food nor eating locally contributes anything to our health, nor to the health of our environment. In fact, any major swing to organic farming would reduce agricultural output and threaten the lives of people. I must say that I enjoy eating improted food products, oranges, tropical fruit, or just plain produce that is out of season. Canada is also a major exporter of a variety of products, and if we oppose imported products, this could, in the end, cost us our export markets.
So I think it is best to resist these fads.