Should unproven stem cell therapies be regulated?

A group of 15 senior doctors and researchers from around the world have published a paper calling for worldwide regulations against unproven stem cell therapies.

Warnings that a treatment is “unproven” or “untested” might not deter those who are seriously or terminally ill and have no other option.

That’s given rise to a market for expensive treatments that don’t have scientific backing — particularly in the field of stem cell therapy.