The latest news about the guitar great's health emerged alongside Black Sabbath's decision to scrap an appearance at Ozzfest Japan later this year (15), but Iommi insists he's fine.

In a post he writes, "I'm not sure how the rumor of my being unwell started as I was away on holiday."

Iommi, who has been battling lymphoma since the beginning of 2012 - shortly after Black Sabbath reunited, adds, "Once you've had something like lymphoma, the fear that it will return never leaves. All I can say is that right now I'm fine and have regular blood tests."