Here's a form of CAM that's been proven to work - millions of people use it everyday. There's also lots of promising research being done currently about yoga for cancer/cancer recovery, stress, depression, anxiety, smoking cessation, muscular problems, and pain. Check it out!
Yoga as a Complementary Health Approach | NCCAM
Mind and Body Approaches for Smoking Cessation: A Review | NCCAM
Integrative medicine, or CAM, doesn't have to take the place of conventional medicine - it should be a combination of both forms. It's important to highlight that Americans are actively seeking out "alternative treatments or therapies" more than ever before. Many herbs can have interactions with prescription medications. As health care providers, we need to be knowledgeable about these interactions. It's ignorant to think that we shouldn't educate ourselves about something even if we don't agree with it.
Yes, there are more studies that need to be done to prove the efficacy of specific forms of CAM... and that is EXACTLY what's currently happening. Most people would be surprised at the information out there, if they actually took the time to look into current research.