After President Joe Biden’s address to the nation Wednesday night, multiple doctors shared their opinions with Fox News Digital about his perceived health status based on his live speech.

Seated in the Oval Office, the president spoke relatively briefly about his withdrawal from the 2024 race and his commitment to continuing to serve the country for the next few months. 

He did not mention his recent COVID-19 infection, ongoing concerns about his cognitive health, or the recent assassination attempt on the life of former President Donald Trump.

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Dr. Marc Siegel, clinical professor of medicine at NYU Langone Medical Center and a Fox News medical contributor — who has never treated the president — noted that Biden seemed to be reading from a teleprompter on Wednesday night, as he often does, making it difficult for those watching to gauge his medical fitness.

Although Biden stumbled over his words a few times, Siegel was more concerned about the president’s apparent "lack of emotion."

"It is a very emotional time for him and he isn't showing it," the doctor told Fox News Digital after the speech. "He seems to lack conviction."

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Siegel expressed concern that Biden "could be depressed and shocked by the current reality."

"I feel compassion for him," Siegel went on. "How can he quote from the Declaration [of Independence] without much conviction? I feel bad for him and for us."

Dr. Robert Lufkin, a California-based physician and medical school professor at UCLA and USC, also weighed in on Biden.

Lufkin noted that he has never examined Biden, but offered his observations based on Wednesday’s speech and recent media events.

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In previous appearances, Biden has shown signs of "cognitive deterioration," the doctor told Fox News Digital.

"The findings in his previous presentations could have a variety of causes, including sleep deprivation, sedation, metabolic abnormalities or even neurodegenerative diseases."

Tonight’s short presentation appeared to be read from a teleprompter, Lufkin agreed — "which is less demanding than the more spontaneous Q&A debate format of some of his previous events."

In previous appearances, such as the June 27 debate, Biden has shown "confused rambling, sudden loss of train of thought in the middle of a sentence, halting speech, and the repeated use of the word ‘anyway’ when lost in a sentence," Lufkin noted.

"Tonight, we did not see these in his presentation," he said. "His delivery was fairly uniform without interruptions."

The fact that these findings were less apparent tonight could be due to the speech format of the presentation and use of a teleprompter, according to Lufkin.

"That format is much less challenging and less likely to uncover pathology than a more rigorous Q&A exchange or debate format," he went on.

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He said he hoped that "continued interactions with Mr. Biden in various presentation formats will allow us to understand his situation in more detail."

Dr. Earnest Lee Murray, a board-certified neurologist at Jackson-Madison County General Hospital in Jackson, Tennessee, said the speech from the Oval Office was "clearly better" for Biden than the debate, but also noted that the president struggled at times with reading from the teleprompter. 

Murray has not treated or examined Biden.

"Reading simple passages do become difficult in patients with dementia," he told Fox News Digital, expressing a professional opinion in general about such cases. 

"Patients with a dementing process have significant difficulties with multitasking," said Murray, again speaking generally.

"President Biden seemed more rested and relaxed tonight," Murray said. 

"I suspect the stress of trying to run for office and be president was leading to even worse daily cognitive performance," he also said. 

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In response to earlier outreach from Fox News Digital, the White House press office said that "health was not a factor" in the president's decision to withdraw from the 2024 race. 

"He looks forward to finishing his term and delivering more historic results for the American people," the White House said in its statement.