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.

Marit's chronic lung disease is affecting "her ability to perform her duties," the Royal House of Norway announced.