The prospect of front-runner Donald Trump capturing the Republican nomination seems to be becoming less and less far-fetched, and the real estate tycoon, mimicking a step traditionally taken by top-tier candidates, now plans to release his medical records to show voters he is fit to serve as president.

If Trump were to move into the White House come 2017, the former "Apprentice" star would be the oldest person to ever begin a first term, CNN reported. Republican idol Ronald Reagan was 69 years old when he was inaugurated in 1981. Trump would be 70.

Trump announced his intention on social media Thursday morning.

Trump's promise came in response to a Politico story that noted that the GOP front-runner had faced questions about his "age, diet and lack of workout regimen." The Washington publication pointed out that, even though the businessman had once argued all presidential candidates should release their medical records, he so far failed to lead by example.

"I think you don't want to get into a situation where you elect someone and then you find he's terminally ill and he'll be in office for about three more months," Trump told CNN's Larry King in 1999.

A number of his 2016 rivals, including Democratic front-runner Hillary Clinton and Republicans Jeb Bush and Chris Christie, meanwhile, have already released their respective medical records, Time reported. Clinton rival Bernie Sanders, the only candidate in the field older than Trump, has not yet said if he will release a full health report.

Trump's revelations about his diet caused a stir earlier this year, when he admitted on the campaign trail, "I love steak and hamburger and pasta and French fries, all of the things that we shouldn't be eating," Time recalled.

But he insisted on Thursday that, at least as far as his health is concerned, voters could rely on his "great genes."

"I consider my health, stamina and strength one of my greatest assets," Trump noted.