Joe Biden is 78 years old on November 20 and becomes the oldest US president when he takes office on January 20 the following year.

Joe Biden's campaign, however, did not announce any birthday plans.

Biden's age issue has been a target for President Trump, 74, to attack during his campaign.

The former US vice president was about 1m8 tall, weighed over 80 kg and had a blood pressure of 128/84 at the time of the release of the health assessment.

During his campaign, to fight health attacks, Biden regularly jogged up the podium.

Ross Baker, a political scientist at Rutgers University who has advised lawmakers of both parties, said Biden must build a reputation with the American people that he is physically and mentally fit.

Before Biden, former President Ronald Reagan was re-elected at the age of 73. President Donald Trump also took office at the age of 70.

After being predicted by the media to become President-elect with 306 electoral votes, Biden quickly planned to build a new cabinet to fulfill the top priorities of Covid-19 and economic affairs.