Why A Top Cancer Doctor Says Biden’s Diagnosis Story Doesn’t Add Up

Dr. Stephen Quay does not believe President Joe Biden was only just diagnosed with Stage 4 prostate cancer, telling The Daily Wire, “there is a mismatch between the standard of care [Biden] should have been getting, and what we’re hearing about now.”

Quay, a University of Michigan-educated doctor, author, and renowned scientist, spoke to The Daily Wire just days after the former president’s office announced that he had been diagnosed with an “aggressive form” of prostate cancer that had already metastasized to his bones. He said he’s received death threats since he began speaking out about Biden’s diagnosis, calling the experience “quite bizarre.”

But Quay made it clear that he is simply offering thoughts “based on peer-reviewed papers that address large populations.” To that end, he notes that 85 to 90% of all cases, the disease progression from localized in the prostate to advanced metastatic disease is a process that plays out “over the course of five to seven years.”

Quay made it clear that while a rapid onset of advanced disease was certainly possible, that was only the case in perhaps one or two percent of patients. He also noted the fact that Biden’s cancer is “hormone sensitive” could potentially explain the former president’s physical and cognitive decline.

“The standard treatment would be to deprive the body of testosterone through Androgen Deprivation Therapy,” Quay said. For a man of Biden’s age, such a precipitous drop in testosterone could lead patients to lose muscle tone and become noticeably weaker.

“Out of 100 men, nearly 40% will have a serious fall within six to 12 months of ADT treatment,” he said, adding that another common side effect had to do with patients seeing cognitive issues.

“Some of that will be self-reported, where they just notice that maybe they’re not as sharp as they have been in the past,” Quay said, also noting that the people around the patient might also notice cognitive decline even when the patient himself did not.

While Quay said that he had no knowledge of whether Biden knew of his diagnosis prior to his office’s public announcement, he said that it was possible that the former president’s noticeably awkward gait and obvious cognitive issues were side effects of the standard treatment for his cancer.

If that were the case, he added, he could understand why someone in Biden’s position might have made a “calculated decision” not to release the information to the public.

“He might have not had the cognitive issues when he decided to go ahead with a campaign,” he said. “It’s true that he probably couldn’t be elected with cancer or cognitive issues, so at some point, he would have to make a calculated decision whether or not to tell people. But to speak to whether or not that was the right course of action, I stop being a doctor with an opinion and start being a voter with an opinion — and that’s fine as long as I can keep them compartmentalized.”

A Biden spokesman has said that nothing was hidden from the public and that the former president did not receive his prostate cancer diagnosis until last Friday. The spokesman also said Biden’s last known prostate cancer screening — called a Prostate Specific Antigen test — was in 2014.

Quay discussed the efficacy of PSAs in an X post shortly after Biden’s diagnosis was made public.

“Prostate cancer is the easiest cancer to diagnose when it first starts and to watch it progress to bone metastases,” he wrote.

“The PSA blood test shows the rate of cancer cell growth. For even with the most aggressive form, it is a 5-7 year journey without treatment before it becomes metastatic. Meaning, it would be malpractice for this patient to show up and be first diagnosed with metastatic disease in May 2025. It is highly likely he was carrying a diagnosis of prostate cancer throughout his White House tenure and the American people were uninformed.”

Prostate cancer is the easiest cancer to diagnose when it first starts and to watch it progress to bone metastases. The PSA blood test shows the rate of cancer cell growth. For even with the most aggressive form, it is a 5-7 year journey without treatment before it becomes…

— Dr Steven Quay (@quay_dr) May 18, 2025

“If you can believe what they say, that it is hormone sensitive, that means that it would be detectable in PSA (Prostate Specific Antigen) levels,” he said, noting that PSA testing is not always recommended after age 69, but that for someone in Biden’s position it seemed unwise not to go ahead with the test.

“There is a mismatch between the standard of care that he should have been getting and what we’re hearing about now.”