When you are diagnosed with cancer, most "conventional" doctors will urge you to start chemotherapy (or similar treatment) at once. That's what happened to the author of this book as well. However, he choose to ask for a second, a third opinion (etc) and soon found out that for his cancer chemotherapy wouldn't heal him or that others, such as Prosessor Wynder thought "If he touches chemotherapy, he's a goner." (most patients take the doctor's advice and find only later, through a process of gradual disclosure, that doctors can't prove chemotherapy really helps.)
Basically, this patient took the approach you would expect a skeptic to take, but even if you look at this case from a perspective of Evidence Based Medicine and look at the survival rates, I do agree that chemotherapy doesn't appear to be the "appealing" approach. Unfortunately, most people that "preach" skepticism are only skeptic with regards to things that are called "alternative" and do not take this healthy skeptic approach when it comes to "respected sciences" such as conventional medicine.
This book shows (again) that medicine should take a more integral perspective when thinking about healing and that more research is needed for alternative treatments. But then, what do you expect from a medical community where even psychology is considered "unscientific" and with little of no interest for doctors.
I would have loved that my father would have read this and related books before letting chemotherapy kill him. I keep wondering what his fate would have been if he had studied the medical research as Michael did and would have considered alternatives or complements to his unsuccessful treatment. It takes more books like these to get "fair access" to "unconventional" therapies so that lay persons can at least consider that chemotherapy alone won't be enough to survive the cancer.
Other related books you might want to read: John Diamond's: "Because Cowards get cancer too" and Kenny Ausubel's "When Healing becomes a crime".