During Trump's major speech on Wednesday announcing that the US would recognize Jerusalem as the capital of Israel, the president appeared to start slurring his words, leading many online to speculate what could be the causing the impairment.
Spokeswoman Sarah Sanders said the White House believed there was a "legitimate reason and basis for not answering those questions".
Viewers speculated that the muddled words may be a sign he has a medical problem.
Trump noticeably slurred the final words and people started to theorize that he may have been wearing dentures or some other form of dental prosthetics.
She added: "He does have a physical scheduled for the first part of next year, the full physical that most presidents go through".
She said the president was in good health and would undergo a routine annual check up next month at Walter Reed Army Medical Center, as is customary for presidents.
When asked about Trump's apparent verbal slip, a White House spokesperson told the media outlet Quartz that Trump had a case of "dry mouth". "But I'd be happy to share any information".
The records release will be the first time the American public gets a legitimate accounting of the health of the 45th President, who at age 71 is the oldest of any President at this point in his tenure.