The Crown Princess of Norway will be absent from public duties for most of October as she undergoes treatment for an incurable lung condition.

The 52-year-old was diagnosed with pulmonary fibrosis in 2018 and has suffered the effects of the disease ever since.

In an attempt to reduce symptoms and improve the Crown Princess’ quality of life, she will soon begin lung rehabilitation, the Royal House of Norway said.

Crown Princess Mette-Marit, front left, and Crown Prince Haakon, front right, on their way to the gala dinner at the Royal Palace in Oslo, Norway, Tuesday, Oct. 15, 2024. (Javad Parsa/Pool Photo via AP)The Crown Princess of Norway will have lung rehabilitation in an undisclosed part of the country, the palace has said. (AP)

The announcement came from the palace on Friday.

“Her Royal Highness Crown Princess Mette-Marit will undergo a month of pulmonary rehabilitation in Norway from the beginning of October,” the Royal House of Norway said.

“The Crown Princess will therefore not carry out official assignments in October, but some exceptions are planned”.

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Norway's Crown Prince Haakon, Crown Princess Mette-Marit and their children Prince Sverre Magnus, left, and Princess Ingrid Alexandra, second left, greet the children's procession during the May 17 celebration at Skaugum in Asker, Norway, Saturday May 17, 2025. (Lise Aaserud/NTB via AP)The Crown Prince family pictured in May in Norway. Mette-Marit will take a leave of absence as she undergoes lung rehabilitation. (AP)

Mette-Marit is expected to take part in a state dinner at the Royal Palace on October 23.

“The Crown Princess is scheduled to resume her official work in November,” the palace said.

The disease causes scarring on the lungs and makes breathing increasingly difficult.

Last year, Mette-Marit was forced to extend her sick leave and absence from public life as her conditioned worsened.

OSLO, NORWAY - APRIL 8: Crown Prince Haakon of Norway, Crown Princess Mette-Marit and Princess Ingrid Alexandra attend the welcoming ceremony at The Royal Palace in conjunction with the Icelandic State Visit on April 8, 2025 in Oslo, Norway. (Photo by Rune Hellestad - Corbis/Getty Images)Mette-Marit pictured with husband Crown Prince Haakon and daughter Princess Ingrid Alexandra in April. (Getty)

She has been forced by her medical team to take leave in the past, to cope with the side effects of the drugs used to treat the condition.

She is married to Norway’s Crown Prince Haakon and they have two children together – Princess Ingrid Alexandra, 21, and Prince Sverre Magnus, 19.

Princess Ingrid Alexandra, who is heir to the throne after her father, is currently living in Australia and doing a three-year bachelor degree at the University of Sydney, which she began in late August.

In 2019, Crown Princess Mette-Marit spoke with Norwegian television network NRK about her diagnosis

“I am exhausted faster than before, so today I have to take more care of myself than I did before,” she said.

Of her time away from official duties, the Crown Princess said: “I can decide more about my everyday life and I realise how good it is to me, I can just go for a walk and have more time to read, life has slowed down.”

The announcement from Norway’s Royal House about the Crown Princess came just days after another of its members made headlines around the world because of a new, controversial, documentary.

Rebel Royals. (L to R) Shaman Durek Verrett and Märtha Louise in Rebel Royals.. Cr. Courtesy of Netflix © 2025Norway’s Princess Martha Louise and Shaman Durek Verrett in the Netflix documentary Rebel Royals. (Courtesy of Netflix)

A war of words between the palace Royal House of Norway and Princess Märtha Louise erupted after the release of Rebel Royals on Netflix on Tuesday.

The palace said the film was “a breach of the agreement” made in the wake of her royal exit three years ago, which banned her from being called a “princess” in any commercial endeavours.

Princess Märtha Louise no longer carries out official engagements representing the King, something she described as “sad” in the documentary.

The tiaras worn by the Norwegian royal family

The tiaras worn by the women of the Norwegian royal family

Following the palace’s statement, the princess and her American healer husband Shaman Durek Verrett issued a hasty apology saying they “recognise the seriousness of this situation”.

Overnight, Shaman Durek used his Instagram page to clarify comments he made about Norway’s King in the documentary in which he claimed King Harald V “didn’t even know what racism was”.

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