I just went and looked for preliminary information on the net. What I found is not encouraging.
First off, Campbell appears to be a committed vegan. While there's nothing wrong with that as a lifestyle choice, there is a problem if you allow your convictions to interfere with your interpretation of the scientific results. That is exactly the trap that Ancel Keys fell into in his work starting with the cherry-picking of the "Seven Countries Study".
Here is a comment I found in
one review:
What is most shocking about the China Study is not what it found, but the contrast between Campbell’s representation of its findings in The China Study, and the data contained within the original monograph. Campbell summarizes the 8,000 statistically significant correlations found in the China Study in the following statement: "people who ate the most animal-based foods got the most chronic disease." He also claims that, although it is "somewhat difficult" to "show that animal-based food intake relates to overall cancer rates," that nevertheless, "animal protein intake was convincingly associated in the China Study with the prevalence of cancer in families."
But the actual data from the original publication paints a different picture. Figure 1 shows selected correlations between macronutrients and cancer mortality. Most of them are not statistically significant, which means that the probability the correlation is due to chance is greater than five percent. It is interesting to see, however, the general picture that emerges. Sugar, soluble carbohydrates, and fiber all have correlations with cancer mortality about seven times the magnitude of that of animal protein, and total fat and fat as a percentage of calories were both negatively correlated with cancer mortality. The only statistically significant association between intake of a macronutrient and cancer mortality was a large protective effect of total oil and fat intake as measured on the questionnaire. As an interesting aside, there was a highly significant negative correlation between cancer mortality and home-made cigarettes!
...
The China Study contains many excellent points in its criticism of the health care system, the overemphasis on reductionism in nutritional research, the influence of industry on research, and the necessity of obtaining nutrients from foods. But its bias against animal products and in favor of veganism permeates every chapter and every page. Less than a page of comments are spent in total discussing the harms of refined carbohydrate products. Campbell exercises caution when generalizing from casein to plant proteins, but freely generalizes from casein to animal protein. He entirely ignores the role of wheat gluten, a plant product, in autoimmune diseases, so he can emphasize the role of milk protein, an animal product. The book, while not entirely without value, is not about the China Study, nor is it a comprehensive look at the current state of health research. It would be more aptly titled, A Comprehensive Case for the Vegan Diet, and the reader should be cautioned that the evidence is selected, presented, and interpreted with the goal of making that case in mind.
I think I'll keep my money in my pocket, thanks. Or maybe spend it on another copy of Taubes to loan out.