Crown Princess Mette-Marit is rearranging her royal responsibilities as her chronic lung disease has "progressed," the Royal House of Norway said.

Crown Princess Mette-Marit of Norway's chronic pulmonary fibrosis "has progressed," the Norwegian Royal House announced on March 6. The Royal House shared an update on the Crown Princess, revealing that changes to her official schedule may happen more frequently.

Marit's chronic, incurable lung disease has worsened, meaning she may have to change her schedule at short notice.

The Norwegian royal family has issued a heartbreaking update on Crown Princess Mette-Marit’s rare cancer battle, saying she requires “more rest” as her situation worsens. The royal, 51, is declining in health amid her battle with pulmonary fibrosis — an incurable condition that scars lungs and causes shortness of breath.