In April, Norway’s Crown Princess Mette-Marit arrived at a royal engagement with an oxygen cannula in her nose. Though she has been public about her diagnosis with pulmonary fibrosis—an irreversible disease that damages lung tissue—her new accessory was an early sign that her health had taken a turn for the worse. But last week, her doctors announced that she was going on the list for a lung transplant. “The progression of the crown princess’s lung disease is serious,” respiratory specialist Are Holm said in a statement. “Following a comprehensive medical assessment, she has now been placed on the waiting list for patients who will undergo a lung transplant as soon as a suitable donor becomes available.” In a statement, Norway’s royal household announced that Mette-Marit would be taking a break from royal work, while her husband, Crown Prince Haakon, and their two children would be adjusting their plans to spend more time with her. The crown prince “will limit longer journeys both within Norway and abroad before and after the operation,” it read. The news …