King Charles is still receiving cancer treatment in 2026 but is 'the happiest he's ever been' in his role as monarch, according to a leading royal biographer who has watched his first years on the throne at close quarters.
For context, Buckingham Palace announced in early 2024 that King Charles had been diagnosed with an unspecified form of cancer following treatment for a benign enlarged prostate. The Palace confirmed at the time that the disease was caught during those tests, but did not disclose the type or stage of the cancer, and it has not issued any detailed medical update since. What it did say was that the King would step back temporarily from public-facing duties while continuing with state business and his red boxes behind the scenes.
