The International Society for Stem Cell Research (ISSCR) is a professional organization of stem cell researchers. I am happy to see that they see it as their responsibility to respond to the growth of dubious stem cell clinics offering unproven treatments to desperate patients.
In a recently published handbook for patients, they write:
The International Society for Stem Cell Research (ISSCR) is very concerned that stem cell therapies are being sold around the world before they have been proven safe and effective.
Stem cell therapies are nearly all new and experimental. In these early stages, they may not work, and there may be downsides. Make sure you understand what to look out for before considering a stem cell therapy.
Remember, most medical discoveries are based on years of research performed at universities and companies. There is a long process that shows first in laboratory studies and then in clinical research that something is safe and will work. Like a new drug, stem cell therapies must be assessed and meet certain standards before receiving approval from national regulatory bodies to be used to treat people.
This is good advice for any new treatment.