Stuff, New Zealand
The 36-year-old confirmed to the New Zealand Women's Weekly magazine that the hunt was on for a new kidney donor.
Lomu looked in fine form when he opened the Rugby World Cup last September and was due to box in the Fight For Life event but had to withdraw as his health deteriorated.
He spent a long spell in hospital in Auckland late last year.
Kidney disease meant Lomu had top have a kidney transplant eight years, effectively ending his hugely successful international rugby career.