Jedward: Their DNA is the same - but do the world's most famous twins share a biological age?

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<p>John and Edward Grimes burst on to the scene in 2009 as a phenomenon on X-Factor, and have been a mainstay on the showbiz scene ever since.</p><p>TV, movies, Eurovision: no one can escape this Irish duo's j-epic brand of entertainment.</p><p>But what impact has more than 15 years of fame had on the boys as they became men?</p><p>Their care-free, feel-good attitude is synonymous with the&nbsp;Jedward&nbsp;brand, but losing their mum at an early age, and playing the fame-game has had its own impact behind the scenes.</p><p>Now 33, they've given Katherine Ryan a few drops of their blood to get it tested, so she can find out their biological age.</p><p>As twins, their DNA is an exact match, so our resident scientist Dr Nichola Conlon explains how slight variations in diet and mindset could be a reason why their biological ages might differ...&nbsp;&nbsp;</p><p>And will the boys get competitive when the results are incoming? You bet!</p><p>&nbsp;Lead producer– Mick Coyle</p><p>Social media - &nbsp;&nbsp;Cassidy&nbsp;Rebelo</p><p>Video Producer – Elena Cotton</p><p>Video Producer– David May</p><p>Artwork – Ben Watkins&nbsp;</p><p>Video Editor - &nbsp;Paul Collins-Reddin&nbsp;</p><p>Head of Video – Edie Jefferys</p><p>Sound Designer – Dominic Delargy</p><p>Executive Producer – Henrietta Harrison</p><p>Chief CreatIve Officer –&nbsp;Lucie&nbsp;Cave</p><p>&nbsp;</p>