For Jeni Britton, fiber helped her “get to a place in my life where I could ask for a divorce.” Five years ago, the company she founded, Jeni’s Ice Cream, was her whole life. She’d been running the business for more than 15 years, but increasingly, she was feeling lost and exhausted. She started going for long walks, hiking near the Appalachian Mountains outside of her hometown of Columbus, Ohio, and eating tons of blueberries. “Like, a quart a day,” she says. She quickly noticed that she felt better than usual — radically better. She suddenly had more energy; for the first time in her life, she started running in the woods. She dropped 20 pounds without much effort. The way Britton tells it, she accidentally stumbled on the secret to health and well-being. And in January, she launched Floura, a line of fruit bars in flavors like “blueberry matcha” and “mango cardamom” that promise half your daily fiber. The first batch sold out in two days. For the latest edition of #Encounter, j...