Sharon Osbourne's ongoing health struggles - from cancer battles to unexplained collapse

ok.co.uk:

Sharon Osbourne has bravely faced up to more than her fair share of health battles over the last two decades.The former CBB star first opened up about her colon cancer diagnosis in 2002, which led to surgery and a gruelling three-month course of chemotherapy.

Fast forward ten years, and Sharon took the proactive step of undergoing a double mastectomy when she discovered she carried genes that made breast cancer a likely threat in 2012.

And there is still some confusion around a health scare last year that saw the star faint and require hospital treatment. Speaking on US talkshow The Talk, Sharon said: "It was the weirdest thing.

I was doing some filming and suddenly they told me that I [passed out] for 20 minutes." Despite being rushed from one hospital to another and undergoing numerous tests, the cause remains unknown. "And I was in hospital, I went to one hospital, they took me to another hospital, and I did every test over two days, and nobody knows why." On December 19, the star updated her Instagram followers, announcing she was back home and "doing great" after collapsing at the Glen Tavern Inn in Santa Paula, California, during the filming of "Night of Terror", reports the Express.