How is Big Mac and Diet Coke addict Trump so fighting fit at 78?

In 2015, fledgling presidential candidate dictated a letter for his doctor to sign testifying that, if successful, he would be 'the healthiest individual ever elected to the presidency'.

Ever since, his opponents have scoffed at his bare-faced cheek (the letter also declared that his 'physical strength and stamina are extraordinary') while continuing to warn darkly that a man of his age with his diet of fast food and Diet Coke, and his exercise regimen (or lack thereof) cannot possibly be healthy.

His critics' insistence that the new US President is just one Big Mac away from a heart attack may contain a huge dollop of wishful thinking but it has nonetheless been trotted out incessantly for years.

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