There is wide acceptance that the evidence provided by randomised controlled trials (RCTs) that are conducted to high standards is at the top of a hierarchy of evidence. Some web sources are listed below that, because they base their advice on careful and transparent evaluations of the available evidence, can be trusted.
I was contacted by a journalist about a local cancer "cure", Te Kiri Gold, and sent a response (with a little help from ex-chair of the NZ Skeptics, Vicki Hyde):
How the standards of skeptical thinking can be used to reject ineffective charities in favour of effective charities.
Alison Campbell considers the evidence for the efficacy of parachutes.
If the caring practitioner has no idea of what to do next, the decision may be best left in the hands of the Almighty. Too many clinicians, unfortunately, are unable to resist giving God a hand with the decision-making.
I will detail these seven alternatives in forth-coming issues of the magazine. For now here is Eminence based medicine: The more senior the colleague, the less importance he or she places on the need for anything as mundane as evidence. Experience, it seems, is worth any amount of evidence. These colleagues have a touching faith in clinical experience, which has been defined as "making the same mistakes with increasing confidence over an impressive number of years." New Zealand Medical Journal Vol 113 No 1122 p479
Television New Zealand says it will axe an Earth Care advertisement claiming that burnt possum testes can keep possums at bay, if the biodynamic technique turns out to be no more than quackery.