After a stretch of limited public appearances since leaving office, former President Joe Biden’s cancer diagnosis arrived amid heightened scrutiny of his cognitive health.

On May 18, former President Joe Biden’s staff announced he has an aggressive form of prostate cancer. In response, several social media users began circulating a three-year-old video clip of Biden as evidence that he knew about his diagnosis years before.

Jon Stewart is slamming CNN for continuing to promote a tell-all book about former President Joe Biden's health after he announced a prostate cancer diagnosis. The book "The Original Sin," out May 20,

Biden, even after he has exited political life and as he faces a serious cancer diagnosis, remains a factor in the conversation about his party's political future.

Ezekiel Emanuel, a prominent Democratic figure, told “Morning Joe” the former president "did not develop [prostate cancer] in the last 100 to 200 days."