King Harald of Norway, the oldest monarch in Europe at 89 years old, has been admitted to the National Hospital in Oslo with a rare blood condition known as haemolytic anaemia. This condition has led to fluid accumulation in his body, prompting a two-week period of sick leave and the appointment of his son, Crown Prince Haakon, as regent. The palace has confirmed that the King has been treated with cortisone for the blood disease, which is causing the fluid buildup. This is not the first time King Harald has faced health challenges; he has had multiple hospitalisations and medical procedures in recent years, including a pacemaker fitting and a heart valve replacement. The King's recent health struggles have led to a reduction in public engagements, and his family has been dealing with significant health issues as well, including a lung transplant for Crown Princess Mette-Marit, his daughter-in-law. The King's condition highlights the challenges of maintaining a public role at an advanced age and the impact of chronic health issues on royal families. As King Harald takes time to recover, the Norwegian monarchy faces a period of uncertainty, with the Crown Prince taking on a significant role in the interim. This development underscores the importance of succession planning and the potential impact of health issues on the stability of monarchies.