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.

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

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

In a new statement on Thursday, Norway's palace gave an update on her health. It said that she has "daily symptoms and ailments that affect her ability to perform her duties" and that since the condition has "progressed,"changes to her official schedule "may occur more frequently". But it added that Metter-Marit remains focused on her royal duties.