What this book and the popularity of these alternative approaches to health and healing show is that people don't believe the science education they were given.
Most people are familiar - at least vaguely - with the Scientific Method. They were introduced to it in middle school or earlier.
While it's fun to laugh at the people that believe in this stuff and meet an early grave or a debilitating chronic condition because of their belief in this hocus-pocus, I believe we'd be better served (and more moral) if we were to focus on the big questions:
Why don't people believe in science? Why don't they know or keep the Scientific Method close to their hearts? What could we be doing better to make sure that quackery like this passes away naturally as it would in any system wherein most people subscribed to the SM?
We all know this stuff doesn't work (beyond the power of the placebo), but we're obviously in the minority. As Stephen Colbert might opine, this stuff is succeeding in the market, so it must be true.
If we want to save people from doom, we should look at improving either the quality or the retention of our science education.