@truewireless yes it is fact, but I wrote my response because...

@truewireless yes it is fact, but I wrote my response because the NHS state with some treatments "there is little or no evidence that they're effective".

But the study NTI have been engaged in will hopefully provide "evidence that they're effective". That's what studies do. People once believed the world was flat until Magellan circumnavigated it. In essance Magellan conducted a study to prove a hypothesis.

If these studies are demonstrated as effective, no doubt the NHS will amend their "not recommended" statement on this issue.