A Saturday morning trip to the farmer’s market is as popular now as garage sales were a generation ago; restaurants are touting their farm-to-table offerings, and even the smallest grocery store has a healthy foods aisle. Eating healthy is easier than ever, yet people around the world are consuming more processed and packaged food than at any time in human history, with devastating effects on health. A new book from food writer Bee Wilson, The Way We Eat Now: How the Food Revolution Has Transformed Our Lives, Our Bodies, and Our World , examines how food, which should be one of life’s greatest pleasures, has become a source of anxiety, obsession and confusion. Wilson also holds the food industry and policymakers accountable for pushing mixed messages and helping consumers get hooked on cheap, fast, easy foods. The Knowledge at Wharton radio show on SiriusXM invited Wilson to talk about the paradox of the modern diet.…