```html Game of Thrones Star Kristian Nairn Withdraws from Strictly Come Dancing Due to Health Concerns

Kristian Nairn, best known for his role as Hodor in HBO's "Game of Thrones," has withdrawn from the upcoming season of "Strictly Come Dancing" due to medical reasons. The announcement, made just days after the official lineup was revealed, cited stress and grief as contributing factors to a physical manifestation of health concerns.

Unexpected Withdrawal

Nairn, 49, shared the news with his Instagram followers, explaining that he had been experiencing "a high level of stress and a little bit of grief." He stated that these issues had "manifested physically" for the first time, causing a spike in his vitals that raised concern from his doctor. "I'm gutted. I was really looking forward to taking part in this," Nairn confessed.

The BBC confirmed Nairn's withdrawal, citing "unexpected medical reasons." Executive producer Sarah James expressed regret, stating, "We've absolutely loved getting to know Kristian in this short time, and he has all the makings of a brilliant Strictly Come Dancing contestant. We're incredibly sorry to lose him from this year's series and we all wish him a speedy recovery."

Nairn's Statement and Health Update

In his video message, Nairn emphasized that he takes his health "very seriously" and undergoes regular medical checkups. He clarified that he was cleared to participate in the show just two weeks prior to the announcement. "Please know I'm OK. I'm under treatment already, and my doctor isn't concerned. After two, maybe three weeks, I'll be pretty much back to normal, but sadly... it's not going to be in time for all the training and everything like that." He also expressed gratitude for the support he received from the show's producers.

Nairn urged his followers to prioritize their mental and physical well-being. "We live in strange, crazy times at the moment. So without being preachy, please look after yourself. Don't ignore what's going on inside your head."

Context: The Demands of Strictly Come Dancing

"Strictly Come Dancing," a British institution, is known for its physically and mentally demanding nature. Celebrities undergo rigorous training schedules, pushing their bodies and minds to the limit to learn complex dance routines within a short timeframe. The pressure to perform well, coupled with the scrutiny of judges and the public, can contribute to significant stress. Dr. Eleanor Prior, a sports psychologist specializing in performance anxiety, commented on the pressures faced by contestants. "Shows like 'Strictly' place individuals in extremely vulnerable positions. They are learning a new skill in a very public arena, often outside of their comfort zone. The combination of physical exertion, performance anxiety, and the constant media attention can be incredibly taxing."

Impact on the Show and Replacement Announcement

Nairn's departure leaves a void in the "Strictly" lineup, just before the series is due to begin. The show's producers are now tasked with finding a suitable replacement to join the remaining contestants. The replacement contestant will be revealed on The One Show on BBC One.

A History of Unexpected Departures

While Nairn's withdrawal is unexpected, it is not unprecedented in the history of "Strictly Come Dancing." Over the years, various contestants have had to withdraw due to injuries or other health concerns. These incidents highlight the physical and mental toll that the competition can take on participants, regardless of their background or fitness level. Entertainment journalist, Mark Lawson, notes that “The show's intensity, while part of its appeal, inevitably leads to these situations. Producers are increasingly aware of the need to provide robust support systems for contestants, both physically and mentally."

Nairn's Other Projects

Aside from his role in "Game of Thrones," Nairn is also known for his role in the US TV comedy drama "Our Flag Means Death" and is a house music DJ. ```