DEMOCRAT Joe Biden made history as the oldest president ever after he was elected as the 46th President of the United States.

       Former President Donald Trump held the title before him and now American's want to know how old their president actually is.

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       Joe Biden was sworn in as president at the age of 78 Credit: AFP Is Joe Biden the oldest US President ever?

       At the time of Biden's inauguration, he was 78 years old, making him the oldest person to be elected president in US history.

       Prior to this, Trump held the title after he was elected at the age of 70.

       In comparison, the youngest president elected to the White House was John F Kennedy who was 43 years old at his inauguration.

       However, Theodore Roosevelt holds the title of the youngest person to assume the presidency following the assassination of William McKinley.

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       How old is Joe Biden?

       Joseph Robinette Biden Jr was born on November 20, 1942, making him 79 years old.

       Prior to becoming the oldest president in history, Biden became the sixth-youngest senator in US history after being elected to the position in 1973 at the age of 31.

       He then unsuccessfully sought the Democratic presidential nomination in 1988 and in 2008.

       In 2021, fears of Biden's health were mounting after his abundance of falls and brain aneurysms.

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       As of 2021, he is 79 years old Credit: Getty Did Joe Biden give Kamala Harris presidential power?

       In November 2021, Vice President Kamala Harris made history after she became the first woman to hold presidential power in the United States.

       On November 19, Biden transferred power over to Harris while he underwent a routine colonoscopy.

       Press Secretary Jen Psaki said in a statement: "As was the case when President George W. Bush had the same procedure in 2002 and 2007, and following the process set out in the Constitution, President Biden will transfer power to the Vice President for the brief period of time when he is under anesthesia.

       President George W Bush was the first to use the 25th Amendment's Section 3 to temporarily transfer power, to Vice President Dick Cheney while Bush was anesthetized for a colonoscopy.

       Bush also temporarily transferred power in 2007 to undergo another colonoscopy.