“You are what you eat.” We’ve all heard it, but the saying doesn’t seem as simple as it used to. The question of a healthy diet now extends beyond “broccoli or beef?” These days, we’re left wondering how substances like pesticides, antibiotics, and GMOs affect us when we consume them. We’re not even sure how to tell which ones end up on the table.

Pulitzer Prize-winning photojournalist Anthony Suau had these same questions when, in 2008, he returned to the United States after spending 20 years living in Europe. “I realized that I basically couldn’t eat the food, specifically the meat. It just tasted terrible. I found myself very quickly gaining weight. I didn’t understand what was going on.” So