The reason for this is that soy is an extremely cheap and abundant source of protein. Second only to corn, soy is one of the largest crops produced by the United States. In the 1950s, the food industry had a waste problem on their hands: Soy oil was used extensively in processed foods, which left the remaining components of the soybean, namely the protein, as waste. Waste wasn't an attractive option, so food processors began to aggressively market soy protein as a healthy, vegetarian substitute for meat and dairy to the health conscious.
Find out more about this book:Eat Naked: Unprocessed, Unpolluted, and Undressed Eating for a Healthier, Sexier You