TV
Ken McKay / Rex Features
The singer came close to pulling out of the reality series after collapsing at her home in London.
Mumba revealed that she first became ill when she returned to the UK following a trip to California over Christmas.
"I've been having heart palpitations which are very weird and scary," she explained. "It's really, really bad timing. I was already 4 weeks behind the other dancers as I had a bad knee injury."
"I went to the doctors for tests and basically I have no iron whatsoever," Mumba continued. "Stress might be a factor too."
Samantha managed to make her first appearance on Dancing On Ice as planned on Sunday night, but she found herself in the bottom two with Sarah Greene. The judges chose to save her and Greene was eliminated.
More: TV, Dancing on Ice
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