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.

Former President Joe Biden was suffering from prostate cancer for "more than several years" while he was in the White House, Dr. Ezekiel Emanuel, a renowned oncologist, told MSNBC's "Morning Joe" on Monday.

Six doctors who specialize in prostate cancer discuss what President Biden's recent diagnosis does and doesn't mean for his future health.