The rise of industrial agriculture has led to the creation of a commodity food chain.   Any type of food, regardless of production method, is assumed to contain the same nutrients as any other piece of the same food.  Lettuce grown on healthy living soil with a diverse array of nutrients and complex biological interactions beyond the understanding of today’s science is regarded as nutritionally the same as lettuce grown in water where the only nutrients available are those added.  Food had become a commodity to be bought and sold in great quantity with no regard for quality.  Now only a handful of corporations control the major meat and grain supply chains.