Former United States President, Barack Obama, has expressed support for Joe Biden, who was recently diagnosed with an aggressive form of prostate cancer that has spread to his bones.

Obama, in a post shared on X (formerly Twitter) on Monday, said no one has done more for cancer research than Biden and expressed hope that he would overcome the current challenge.

“Michelle and I are thinking of the entire Biden family. Nobody has done more to find breakthrough treatments for cancer in all its forms than Joe,” Obama wrote.

“I am certain he will fight this challenge with his trademark resolve and grace. We pray for a fast and full recovery.”

The message came hours after Biden’s office confirmed his diagnosis in a public statement.

The 82-year-old former president’s diagnosis was made public on Sunday night as prostate cancer with metastasis to the bone, following complaints of increasing urinary symptoms and a recently detected prostate nodule.

“While this represents a more aggressive form of the disease, the cancer appears to be hormone-sensitive which allows for effective management,” the statement said.

“The President and his family are reviewing treatment options with his physicians.”

Biden, who served as U.S. president until 2025, had dropped out of the 2024 re-election race due to mounting concerns about his age and declining public support.

His vice president, Kamala Harris, who later contested in his place, eventually lost to Republican Donald Trump.

Last week, a recording showing Biden struggling to recall key facts and dates stirred further questions about his mental health, even as he maintained that he could have won the election if he had stayed in the race.

Biden is no stranger to personal loss, his eldest son, Beau Biden, died of brain cancer in 2015. Since then, his advocacy for cancer research became a core part of his public service.