We know soy as traditional Asian foods such as tofu, soy sauce and soy milk. It’s been cultivated in China for more than 3,000 years. But we’re eating more soy that we think – it’s in a surprising amount of the processed foods we buy. So Carolyn wants to find out why it’s there and if it’s safe to eat. Is it healthy, or is it toxic? Can it impact on fertility? Are we dousing our dinner with contaminated soy sauce? What’s really in our soy?