George Clooney has ignited fresh concern about his health after admitting he now battles to remember his lines on set – a revelation that has prompted friends and industry insiders to quietly question whether age is catching up with one of Hollywood's most enduring stars.

RadarOnline.com can reveal the actor's worries surfaced while promoting his new Netflix film Jay Kelly , in which he plays an aging, world-weary screen icon. Article continues below advertisement

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Clooney, 64, discovered after filming director Noah Baumbach had slipped in clips from his past work, forcing him to confront his own life on screen – from a 1980s m

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