Christopher Andersen, author of "The King," explained why the show must go on for the reigning British monarch. Both King Charles and the Princess of Wales have been lauded for their transparency with their recent health issues, but Queen Camilla originally wanted the king to keep his struggles private, according to an author. In January, Buckingham Palace announced Charles would undergo outpatient treatment for a benign enlarged prostate and then, in February, the palace revealed he had cancer .

"No further details are being shared at this stage, except to confirm that His Majesty does not have prostate cancer," the palace said at the time. Charles initially stepped away from his royal duties during his cancer treatment but returned at the end of April with a reduced schedule. PRINCE WILLIAM ‘COULDN’T STAND' CAMILLA AFTER SHE ‘DESTROYED’ KING CHARLES' MARRIAGE: EXPERTS Camilla reportedly didn't want Charles to disclose his health issues.

(Paul Ellis/WPA Pool/Getty Images) "Queen Camilla had initially been against disclosing his condition," Robert Jobson, who wrote "Our King: Charles III – The Man and the Monarch Revealed," told the Independent this week. "But the king overruled her as he felt it was a chance to take a lead and in doing so to encourage men experiencing similar symptoms to seek timely medical attention. CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTER "There was a significant increase in searches related to enlarged prostate on the National Hea.