Shocking: It turns out the reason Home and Away star Kirsty Marillier left the show was because she was diagnosed with…

It was the exit that no one saw coming.

When Kirsty Marillier quietly departed from Home and Away earlier this year, fans were left scratching their heads. No official statement. No farewell episode. No behind-the-scenes interviews. Just… gone.

Now, after months of silence, a stunning revelation has emerged — and it’s far more serious than anyone had imagined.

According to a close source within the production, Kirsty didn’t leave the show due to creative differences or to pursue other projects — as many had speculated. The real reason, kept tightly under wraps until now, was a private health battle that shook both cast and crew to the core.

“Everyone was sworn to secrecy,” the source said. “It was something Kirsty wanted to handle privately. She didn’t want the media circus — she just wanted to focus on getting better.”

So what exactly was Kirsty diagnosed with?

That’s the million-dollar question — and the answer is only just beginning to surface.

Multiple insiders have hinted at a rare autoimmune condition that began to affect Kirsty’s energy levels and caused severe fatigue during filming. Others have suggested it was neurological — something that required immediate treatment and indefinite rest. One particularly concerning detail? She reportedly collapsed on set just weeks before her final appearance aired.

The show’s producers, loyal to Kirsty’s wishes, remained tight-lipped — even when rumours swirled online. “We support Kirsty in her personal journey,” was the only official comment issued by the network.

And yet… viewers noticed something wasn’t quite right.

Fans began pointing out Kirsty’s dwindling screen time. “She was barely there in the last few episodes,” one viewer posted on Reddit. “It felt like they were phasing her out, but we didn’t know why.”

Now that the truth is finally trickling out, questions remain. Will Kirsty return to the show once her health improves? Is this a permanent goodbye to a rising star in Australian television? And most importantly — why did it take so long for the truth to come out?

One former castmate, speaking on condition of anonymity, said: “Kirsty was one of the brightest souls on set. Her talent is undeniable. But no role is worth your health. She made the right call.”

Fans have since flooded social media with messages of support, calling for transparency — and most of all, for Kirsty to take all the time she needs.

Whether this marks the end of her journey on Home and Away or simply a pause, one thing is clear: this wasn’t just another soap opera storyline.

It was real. It was raw. And it’s a reminder that even our brightest stars face battles we can’t always see.

Stay tuned — we’ll bring you the latest as this story continues to unfold.