Doctors not involved in Biden's care said his diagnoses shows the challenges of screening for prostate cancer.

The news of the former president's illness, coupled with the damage to Biden-world’s credibility when it comes to his fitness, have led to speculation about a cover-up.

The news that former President Joe Biden has been diagnosed with an "aggressive" form of prostate cancer has raised fresh questions about his White House's transparency. Biden's office said in a statement on Sunday that he was diagnosed with prostate cancer on Friday, with the cancer cells having spread to the bone.