A top doctor to Presidents Barack Obama and Donald Trump told the Washington Free Beacon that the prognosis for former President Joe Biden’s metastatic prostate cancer is bleak—and that the former commander in chief might die within a year.

Biden’s office shocked the world last month by revealing that what had been termed a “small nodule” was actually Stage 4 prostate cancer that had spread to his bones.

Representative Ronny Jackson (R., Texas), who served as the president’s physician from 2013 to 2018, told the Free Beacon that Biden may not have much time left.

“This is not my area of specialty, but I have spoken to multiple urologists since this came out, and the general consensus is like, you know, it could be 12 to 18 months,” Jackson said. “Hopefully it’s longer than that, and I hope that they’re able to treat this effectively, and, you know, he lives many, many more years. But it’s far advanced.”

Jackson, who regularly checked both Obama and Trump for the disease, believes Biden may have received a diagnosis long before the May announcement.

“Every year I did an exam for President Obama, and every year that I did an exam for President Trump, I checked the [prostate-specific antigen],” he said. “We screened for prostate cancer. I think there’s a probability here that they knew [Biden] had prostate cancer some time ago and just didn’t tell the American people.”