Ozzy says he still fears for Sharon's health

However, in a magazine interview, Osbourne said he still worried about the prospect of his wife's disease recurring.

He told rock weekly Kerrang! he had experienced a form of "breakdown" because of the stress of his wife's illness and pressures arising from the family's hit reality TV show The Osbournes.

Sharon Osbourne, who manages her husband's career, had lengthy chemotherapy treatment after announcing she had colon cancer in July last year.

She was diagnosed with the illness as the family began to enjoy worldwide recognition from the MTV show.

Ozzy Osbourne told Kerrang!: "She's got no cancer in her body now, they tell me - but there's always a chance of it coming back.

"She's doing great, but I must confess that I'm still worried about her."

He added: "With Sharon's cancer and the success of the TV show I lost it last year, I just freaked out.

"I think I had something like a nervous breakdown - my nervous system just imploded. This is all too much for me sometimes."

Sharon - who delivered Channel 4's alternative Christmas message last year - said last month that she felt "great", even before she was given the all-clear.

In the US TV interview she said: "I now know what it is like to suffer great pain and I know what millions of people around the world have been going through. I'm one of them."