'Little People, Big World's' Zach & Tori Roloff's Newborn Son Has Achondroplasia: 'Not His Identity'

Zach and Tori Roloff are revealing that their 3-week-old son, Josiah, has achondroplasia. In a new interview with Us Weekly, the couple confirmed the diagnosis and explained why they are using specific language when discussing the condition with their children. "He's a boy with achondroplasia…that's not his identity," Zach told the publication.