Getty Images Hillary Clinton sent shockwaves around the world when she collapsed at the 9/11 memorial ceremony

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The 68-year-old American presidential candidate caused concern this week after leaving the memorial ceremony early due to ill health. She was pictured being helped into her car, and her doctor later released a statement saying she had pneumonia. But some are making shocking claims that her collapse is proof she has Parkinson's Disease. Robin has analysed photos of Clinton from the 9/11 memorial ceremony - and he has interesting insights into the possible leader of the free world.

Picture 1 The first thing I notice, of course, is that Hillary is the only one wearing sunglasses. Unless you’re on a beach or in direct sunlight, wearing sunglasses is often a sign of wanting to hide the eyes. Here, she looks slightly vulnerable, as if abandoned by a friend – with a raised forehead, wide cheeks and an open, wide mouth.

Getty Images Robin said "wearing sunglasses is often a sign of wanting to hide the eyes."

11 facts about Hillary Clinton Thu, July 28, 2016 American politician Hillary Clinton becomes the Democratic Party's nominee for President of the United States. Making her the first woman to run for President this century. To celebrate this milestone, here are 11 facts about Hillary Clinton. Play slideshow REUTERS 1 of 11 Hillary Clinton is the first female nominee of a major US Political Party for the United States presidency

Picture 2 Hillary's facial energy here looks tired, like she is making an effort to appear interested. Her eyebrows are down (making her forehead look almost too relaxed) and her lip corners are tight and forward. This brings her lower cheeks upwards, but does not really engage the upper part of the face. This combination of facial expressions all point to someone who is low on energy, but trying to put on a brave face.

Getty Images Hillary is "making an effort to appear interested" here, according to Robin

Picture 3 This is a picture of someone not wanting to engage. The front lower third of Hillary's face is in a ‘set’ position, with both the upper and lower lips fixed. Her chin is lowered as a means to disengage with the people around her.

Getty Images Hillary is "not wanting to engage" here.

Picture 4 As Hillary is talking to a much taller man, she is forced to lift her head uncomfortably high. In this situation, senior leaders will usually lift their eyes and only partially raise their head – but here she raises the whole head making her look uncomfortable, also giving her a lowered status. Her face is verging on ‘stoney' here. Her eyebrows pulled slightly centre, her tight mouth corners pushed strongly forward and her firm jaw has pulled the middle third of the face downwards, almost giving an air of anger or condescension – but of course we must understand that tiredness or illness can often make a face show signs of fixed disengagement.

Getty Images Hillary has "an air of anger or condescension" here

Picture 5 This picture seems to say, ‘I want to go home’. Again, the choice of the sunglasses, the lowered chin and eyeline, plus the fixed bottom third of the face and are all signs of someone not wanting to engage.

Getty Images Hillary appears to be saying "I want to go home" in this shot

Getty Images Hillary is "trying to put on a brave face" at this point