https://rawfoodsos.files.wordpress.com/2010/08/minger_formal_response2.pdf
Conclusion:
If both whole-food vegan diets and non-Westernized omnivorous diets yield similar health benefits, this is a strong indication that the results achieved by McDougall, Esselstyn, Ornish, et al are not due to the avoidance of animal products but to the elimination of other health-harming items. Western diets involve far more than increased consumption of animal products, and for some groups—such as Alaskan Natives—a switch from a traditional diet to a Westernized one entails reduced animal food consumption, with the caloric void replaced by refined carbohydrates, hydrogenated oils, grains, sugar, and convenience foods.
The fact that a dietary shift towards Western fare inevitably leads to proliferation of ―diseases of affluence‖— regardless of changes in animal food consumption—suggests that another factor, or lattice of factors, instigates this decline in health. The success of the Chinese on plant-based diets does not invalidate the experiences of other populations who evade disease while consuming animal products. Nor does individual success on a vegan program nullify the disease reversal seen by those adhering to specific omnivorous diets. Rather than studying the dissimilarities between healthy populations, perhaps we should examine their areas of convergence—the shared lack of refined carbohydrates, the absence of refined sweeteners and hydrogenated oils, the emphasis on whole, unprocessed foods close to their natural state, and the consumption of nutritionally dense fare rather than empty calories or ingredients concocted in a lab setting. Modern foods, and the diseases they herald, have usurped the dietary seats once occupied by more wholesome fare. It is this commonality—the thread bonding healthy populations—that may offer the most meaningful insight into human health. A theory as purportedly universal as Campbell’s should, by definition, unite the various health and disease patterns of global cultures without generating frequent anomalies. By naming animal products as the source of Western afflictions, Campbell has created a hypothesis valid only under hand-picked circumstances—one that cannot account for other epidemiological trends or even recent case-controlled studies. This is a symptom of a deficient theory, embodying only partial truths about broader diet-disease mechanisms. I propose that the China Study remains a largely untapped resource for revealing potential diethealth patterns, expanded awareness of the source of disease, and inlets for future nutritional research—possibilities Campbell has not fully explored in his quest to validate a predetermined hypothesis. I invite Campbell, if he has the time and the interest, to present a more detailed account of his methodology, such as the unpublished book chapter he cited in his first response to my critique.129 It is only through ongoing discussion and clarification that the field of nutrition can continue to evolve, progressing towards an increasingly unified understanding of health. Lastly, I suggest that the ―symphony‖ Campbell has heard thus far is only a partial opus. To cease listening now would be—at best—a missed opportunity for heightened health awareness, and at worst a perpetuation of the misinformation already degrading public and scientific understanding of diet and disease. I thank Dr. Campbell for both the harmonies and the dissonance his work has supplied to the field of nutrition, but implore him to continue listening. The final note has not yet sounded.