When a livestock farmer is willing to "practice complexity"-to choreograph the symbiosis of several different animals, each of which has been allowed to behave and eat as it evolved to-he will find he has little need for machinery, fertilizer, and, most strikingly, chemicals. He finds he has no sanitation problem or any of the diseases that result from raising a single animal in a crowded monoculture and then feeding it things it wasn't designed to eat. This is perhaps the greatest efficiency of a farm treated as a biological system: health.
Michael PollanThe soybean itself is a notably inauspicious staple food; it contains a whole assortment of "antinutrients" - compounds that actually block the body's absorption of vitamins and minerals, interfere with the hormonal system, and prevent the body from breaking down the proteins of the soy itself.
Michael Pollan