Japanese singer and former children’s television personality Akihiro Sugita has announced that he has been hospitalized for major reconstructive jaw surgery due to radiation-induced osteonecrosis. Sugita is best known as the 9th Uta no Oniisan on NHK’s long-running and beloved children’s program Okaasan to Issho. The news was shared on his official X account on March 2, 2026, prompting widespread support and concern from fans across Japan.

The 57-year-old performer revealed that he will undergo jaw reconstruction surgery on March 4 to treat serious complications that developed years after he successfully overcame oropharyngeal cancer.

Health Battle After Cancer Recovery

Sugita disclosed that about three and a half years ago, he was diagnosed with oropharyngeal cancer. After undergoing radiation therapy, he was declared cancer-free. However, while radiation therapy can be life-saving, it sometimes causes long-term side effects. In Sugita’s case, he later developed radiation-induced osteonecrosis of the jaw.

According to his statement, noticeable symptoms began around the summer of 2025, roughly three years after he completed radiation treatment. He experienced intense pain in his molars and inside his mouth, along with persistent swelling that lasted for several months. By autumn, doctors determined that the underlying cause was osteonecrosis, a condition in which bone tissue dies due to a lack of blood supply.

Sugita described the progression as extremely painful. Parts of his damaged jawbone began to break down and protrude through his gums, causing severe discomfort. He shared that speaking and eating became increasingly difficult. The condition significantly impacted his daily life, leaving him in constant pain.

In his post, Sugita expressed relief that doctors were able to prevent the worst-case scenario. He explained that there had been a risk of the bone pushing through his cheek and creating an opening in his face, a serious complication that required urgent intervention.

Understanding Radiation-Induced Osteonecrosis

Radiation-induced osteonecrosis of the jaw is a rare but serious complication that can occur after radiation therapy for cancers of the head and neck. Medical studies indicate that a small percentage of patients who undergo high-dose radiation in these areas may develop this condition.

Radiation can damage blood vessels within the jawbone, reducing circulation and impairing the bone’s ability to heal. Over time, this can lead to bone death, chronic infection, exposed bone in the mouth, and severe facial pain. In advanced cases, surgery becomes necessary.

Sugita’s upcoming procedure involves removing the deteriorated sections of his jawbone and reconstructing the area using bone grafts taken from another part of his body. Jaw reconstruction surgery is considered complex and requires careful post-operative rehabilitation to restore normal function.

Surgery Date Moved Forward

The singer revealed that the surgery had originally been scheduled for May 2026. However, due to worsening symptoms, the operation was moved forward to March 4. He also disclosed that he had been hospitalized for heart failure at the end of 2025, though that condition was unrelated to his jaw issue.

Despite facing multiple health challenges in a short period, Sugita remains optimistic. He reassured fans that his cancer has been fully cured and that his vocal cords were not damaged by treatment. He emphasized that there is no issue affecting his ability to sing, a significant relief for both him and his supporters.

Career and Legacy

Akihiro Sugita rose to nationwide recognition as the 9th Uta no Oniisan on Okaasan to Issho, one of Japan’s most iconic children’s television programs. The show has been airing since 1959 and plays a central role in early childhood education and entertainment in Japan.

As Uta no Oniisan, Sugita became a familiar and trusted presence in households across the country. Through music, dance, and cheerful performances, he helped shape the childhood memories of countless viewers. His warm personality and vocal talent earned him lasting popularity.

After graduating from the program, Sugita continued working as a professional singer and stage performer. He has remained active in the entertainment industry, performing live and maintaining a strong connection with fans who grew up watching him.

Determined to Return

In his recent message, Sugita expressed strong determination to overcome this latest health challenge. He stated that once he gets through the surgery and recovery, he believes he can return to being his energetic self. He also shared his hope of performing in front of fans again before the summer of 2026.

His positive attitude has resonated deeply with supporters. Many fans have taken to social media to send encouragement, expressing gratitude for his transparency and wishing him a successful surgery.

Raising Awareness

Sugita’s case highlights the long-term risks that can accompany cancer treatments, particularly radiation therapy. While survival rates for head and neck cancers have improved significantly, late-onset complications such as osteonecrosis remain a serious concern.

Medical professionals emphasize that patients who have undergone radiation therapy should monitor persistent oral pain, swelling, or difficulty opening the mouth, even years after treatment. Early diagnosis and timely intervention can prevent more severe outcomes.

Sugita’s openness about his condition helps raise awareness among cancer survivors who may not realize that such complications can develop long after initial recovery.

Current Status and Outlook

As of March 2, 2026, Akihiro Sugita is hospitalized and preparing for his surgery scheduled for March 4. The procedure will involve the complete removal of necrotic bone and full jaw reconstruction using transplanted bone from another part of his body.

Recovery is expected to take several months and may include rehabilitation to regain full speaking and chewing function. However, Sugita’s voice remains unaffected, and he has made it clear that he intends to return to singing as soon as he is medically cleared.

His final message before surgery was filled with determination. He promised to do his best and to update fans with positive news once the operation is complete.

Conclusion

Akihiro Sugita’s hospitalization marks another significant chapter in a long health journey that began with his battle against oropharyngeal cancer. Although radiation-induced osteonecrosis has brought new challenges, his outlook remains hopeful.

With cancer behind him and his vocal ability preserved, Sugita is focused on recovery and returning to the stage. His resilience, honesty, and determination continue to inspire fans across Japan.

As he undergoes jaw reconstruction surgery on March 4, supporters await updates and look forward to the day when the former Uta no Oniisan once again delivers joyful songs to audiences.