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

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

Crown Princess Mette-Marit of Norway is experiencing daily symptoms from her chronic lung disease, pulmonary fibrosis, which is increasingly affecting her royal duties. The Norwegian royal court said on Thursday that she requires more rest,