Former Vice President Joe Biden Joe BidenBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Joe Biden should enact critical government reforms if he wins MORE's 2020 campaign on Tuesday released records on his medical history, with a physician asserting he is fit to be president.

"Vice President Biden is a healthy, vigorous, 77-year-old male, who is fit to successfully execute the duties of the Presidency, to include those as Chief Executive, Head of State, and Commander in Chief," said Dr. Kevin O'Connor, who served as Biden's doctor while he was vice president.

O'Connor noted that Biden is being treated for nonvalvular atrial fibrillation, hyperlipidemia, gastroesophageal reflux and seasonal allergies.

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Nonvalvular atrial fibrillation can cause blood to pool in the heart, which heightens the risk of blood clots and strokes if untreated, while hyperlipidemia occurs when there is a high concentration of fats or lipids in the blood.

Biden is the latest White House candidate to release a doctor's note confirming their fitness for office.

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.) was the first 2020 contender to release a note on her health from her doctor last week.

Dr. Beverly Woo wrote that the 70-year-old senator is in "excellent health" and her "only medical condition" is an under-active thyroid gland.

Former New York City Mayor Michael Bloomberg Michael BloombergBloomberg rolls out M ad buy to boost Biden in Florida Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Bloomberg pays fines for 32,000 felons in Florida so they can vote MORE, 77, also released a note from his doctor last week, saying he was in "outstanding health."

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With multiple leading White House candidates — including President Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE — north of 70, questions on health and fitness have grown common on the campaign trail.

Sen. Bernie Sanders Bernie SandersTrump, Biden will not shake hands at first debate due to COVID-19 Sanders tells Maher 'there will be a number of plans' to remove Trump if he loses Sirota reacts to report of harassment, doxing by Harris supporters MORE (I-Vt.), 78, suffered a heart attack while campaigning in October.

The senator said he should have done a better job of paying attention to the signs leading up to his cardiac event.

"I must confess, I was dumb,” Sanders said. “During this campaign, I've been doing in some cases three or four rallies a day, running all over the state — Iowa, New Hampshire, wherever. And yet I, in the last month or two, just was more fatigued than I usually have been.”

Trump was also subject to medical speculation last month after an unannounced trip to Walter Reed Medical Center.