Alarm over 'experimental' stem cell use

Doctors are being urged to report colleagues earning thousands of dollars administering unproven stem cell treatments to patients with conditions ranging from osteoarthritis to autism.

'Stem cell tourism' lures an increasing number Australians overseas in search of dubious treatments that use a patient's own stem cells.

But the unproven therapies have taken root at home, the Stem Cells Australia organisation warns.

The group, made up of medical and scientific experts in bioengineering, stem cell biology and molecular analysis, says patients are paying up to $9000 for