Hunter Biden, son of former United States President Joe Biden, has disclosed that his father’s prostate cancer has spread to his bones, describing the condition as “very painful” and “debilitating”.

Hunter made the disclosure in an emotional interview with the BBC published on Saturday, providing a fresh update on the former president’s health.

“I wish he would complain more, because it’s not good — the cancer has spread,” Hunter said.

He disclosed that the cancer had metastasised to Biden’s bones “and further,” adding that it had become increasingly difficult for the family to watch.

“It’s very painful… very debilitating,” he said.

“Cancer is really hard. It’s really sad to watch.”

Despite his father’s worsening condition, Hunter described Biden as the centre of the family.

“My dad is, to this day, the centre of our family,” he said.

“He’s the best father, the best husband, the best grandfather.”

Biden announced in May 2025, four months after leaving the White House, that he had been diagnosed with an aggressive form of prostate cancer.

At the time, the former president said he was optimistic about his treatment and thanked supporters for their prayers and goodwill.

“I’m dealing with a cancer diagnosis, been getting treatment, and it’s going really well,” Biden said.

He also expressed confidence in his medical team and treatment plan, saying doctors believed the disease could be managed.

“The prognosis is good, we’re working on it,” he said.

Biden has largely stayed out of public life since disclosing his diagnosis, spending more time with his family while undergoing treatment.

His health had already been a major issue during the final months of his presidency and the 2024 presidential campaign, with concerns over his age and physical condition becoming a major subject of political debate.

In July 2024, Biden ended his re-election bid and withdrew from the presidential race, after which then-Vice President Kamala Harris became the Democratic Party’s nominee. Harris subsequently lost the November 2024 election to Republican candidate Donald Trump.

Hunter’s latest comments offer a more concerning account of Biden’s health than previous public statements, indicating that the cancer has progressed despite ongoing treatment.