Certain Christians are against ANY form of complementary medicine. This is because they will not take the time to study what they are all about. They just take the attitude that 'they are of the devil'. I have had many disagreements (approaching arguments) on this topic and have made myself rather unpopular by not agreeing with them.
That said, I do believe that 'some' forms of treatment are to be approached with great caution by the Christian, but there are times when Christians are experts at throwing out the baby with the bathwater.