Rod Stewart has sparked fresh health fears after cancelling another concert due to a mystery medical issue. The venue shared a statement which read, 'Due to an unforeseen but minor medical procedure that required prompt attention, Rod Stewart’s performance tonight in Cincinnati has been postponed. 'Rod is expected to make a quick recovery and looks forward to returning to Cincinnati.' The Daily Mail has contacted representatives for Rod Stewart for comment and has yet to hear back. 'And I’m touring the UK next year and doing the O2 and that will probably be it, I think.'