Donald Trump just had his mental health tested and the results will surprise you

We couldn't have called that one...

Donald Trump will go down in history as one of the most unpopular presidents ever, with his approval rating plummeting in the past year and his controversial decisions leading some to conclude that he is unfit to lead a country.

That's what happens when you almost start a nuclear war, cause a spike in hate crime and threaten women’s reproductive rights...

And arguments that the 71-year-old shouldn't have access to the 'big red button' only grow when observing his Twitter rants and outrageous Donald Trump quotes.

But it wasn't just his words that caused controversy as he recognised Jerusalem as Israel's capital in a speech last month. Viewers were also quick to point out that the president's speech was slurred - sparking concerns around Donald Trump's mental health.

So when Fire and Fury, Michael Wolff's explosive book about Trump, described him as 'beyond reason and control', the public started calling for his mental health to be tested.

With his first medical check up as president already scheduled, Trump apparently asked for a cognitive test to be included to prove his 'many enemies' wrong and put an end to the rumours. But now that the results have been published, people are more confused than ever.

Donald Trump was given the thumbs up, supposedly scoring a perfect 30/30. Yes, really.

'I feel very confident that he has a very strong and a very probable possibility of making it completely through his presidency with no medical issues', announced Dr Ronny Jackson after carrying out the assessment and calling him 'fit for duty.'

And it turns out the slurred speech is all down to a very simple explanation: dry mouth.

There are already calls for a second opinion.