If it "works" by creating a placebo effect then as good as there being an actual mechanism in there at work but it's still a placebo. So it's difficult to tell in a one man trail. What works as a placebo may work for one man but not another.
It's a difficult one to test, but currently the bulk of evidence is against it.
It could well be true is some special cases, your specific back problem might be one, but I think people have to be very careful with unproven medicine. There are a lot of charlatan out there, who manipulate people in the world of unproven medicine.
A bit of googling seems to suggest this is the paper to read for which cases it seems to work for (WHO)
How do you know it was not a placebo?
If it "works" by creating a placebo effect then as good as there being an actual mechanism in there at work but it's still a placebo. So it's difficult to tell in a one man trail. What works as a placebo may work for one man but not another.
It's a difficult one to test, but currently the bulk of evidence is against it.
It could well be true is some special cases, your specific back problem might be one, but I think people have to be very careful with unproven medicine. There are a lot of charlatan out there, who manipulate people in the world of unproven medicine.
A bit of googling seems to suggest this is the paper to read for which cases it seems to work for (WHO)
http://apps.who.int/medicinedocs/en/d/Js4926e/#Js4926e.5