On Monday, the Sanders campaign sent out US-based media letters from three doctors - a physician and two cardiologists - assessing the candidate's health condition as "more than fit enough to pursue vigorous activities and an occupation that requires stamina and an ability to handle a great deal of stress".
The overall evaluation in the separate statements depicted Sanders as being in "good health", adding that the US Senator "underwent a successful graded exercise treadmill examination monitoring" heart function, although the released letters contain no medical records.
The publication of the letters from medical professionals, reportedly similar to information Sanders released three years ago, nonetheless prompted netizens to speculate on the state of Sander's health.
Sanders was hospitalized in Las Vegas, Nevada, on 1 October after experiencing chest pains. He was diagnosed as having had a small heart attack and underwent surgery to open a blocked artery. Following the incident, Sanders canceled campaign events for several days as he recuperated.
After the heart attack, Sanders promised to release his health records by the end of 2019, pledging "to make it comprehensive”.
The US Senator, who describes himself as a democratic socialist, has focused his White House run on proposals for a government-run Medicare for All healthcare plan, that would be paid for primarily with higher taxes on multinational corporations and the wealthy.