Since the main audience was composed of doctors and researchers with little understanding of CAM, his talk was fairly basic. He suggested the new higher number as more valid a count. He told the audience of mostly doctors that they need to specifically ask their patients what CAM they use in order to solicit answers. New and better methods are needed. Conventional medicine does NOT have all the answers.
Some hypothesis are reasonable.
The list included Vitamin C, laetriel and hydrazine sulfate. I would have loved to ask him right there what his rationale was but have sent him an email to that point. Under the Treatments' section is a very complete discussion of hydrazine sulfate. Again, this is subject to discussion. I would very much like to look at the study methods for the above quoted studies.