Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.), a top-tier Democratic presidential candidate, said he will “probably” release his health records by the end of the year during an interview Thursday with The Associated Press.

“I want to make it comprehensive,” Sanders told the AP, regarding the release of his health records, ahead of an event in Iowa. “The answer is I will, probably by the end of the year.”

Sanders, 78, recently suffered from a heart attack. He has said he is feeling well and returned to the campaign trail after taking a brief leave to rest at home in Vermont. ADVERTISEMENT

He told AP he doesn’t expect his records to be very different than the information he released during his 2016 campaign.

“Nothing much has changed except that I had a heart attack, and I look forward to a full recovery there,” Sanders said. “So, I don’t think it’ll be all too revelatory.”

Sanders campaign manager Faiz Shakir gave AP a more definite answer later, saying Sanders plans to release the records by the end of December. He said he expects the statement from Sanders's doctor to show the senator has made a “full recovery” from the heart attack.

A Sanders campaign spokesman was not immediately available for comment when contacted by The Hill regarding the release of his health records.

At 78, Sanders would be the oldest U.S. president.

Fellow top candidates former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE, at 76, and Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.), at 70, would also be the oldest presidents to enter a first term, beating out President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE who entered office at 70.

Biden pledged to release his health records before the Iowa caucus during the last debate in Ohio earlier this month.

A Warren campaign spokeswoman told CNN the senator also plans to release her medical records ahead of the Iowa caucus.