Healing Magnetic Therapy’s Quality Scientific Evidence Ignored by Conservative Medical Researchers

Magnetic therapy has had some bad press recently, this article points out some of the bias that medical researchers apply to complementary therapies which are ignored for some conventional therapies.

One fact that occured to me but isn't mentioned in the article is that many complementary therapies have at least one built in advantage over surgery and drugs which is that even if they don't help, at least they do no harm. Can the same be said for conventional methods?