How was Joe Biden’s cancer not caught earlier? The news that the former president is battling an aggressive, stage-4 prostate cancer that has spread to the bone ignited a public debate about why a person with peerless access to medical care was diagnosed at such an advanced stage with a disease that is quite common in men his age.

The form of cancer Joe Biden has is one of the most common cancers to affect men. Here are the warning signs to watch out for.

The Sidebar panel discusses former president Joe Biden's prostate cancer diagnosis and transparency over Biden and President Donald Trump's health conditions.