Bests & Worsts Reviews from Amazon

I can't condemn this book strongly enough. As a vegan writer and activist who knows a thing or two about soy - including the few proven safety concerns (e.g. soy, like a number of other healthy foods, is a goitrogen: eat too much on an iodine-deficient diet and you may develop a swollen, underactive thyroid gland)- my gripe isn't with a book critical of soy (in 2000, I wrote one of the first feature articles on "the dark side of soy"), it's with a book that consistently deceives and manipulates the reader in order to build a false case. This is poison-pen advocacy (the author, editor and publisher are leaders of the Weston A. Price Foundation, which opposes plant-based diets based on one dentist's 1930s research and hypotheses) - scaremongering in the guise of a benign consumer health expose. It's especially reprehensible because Daniel poses as an exposer of lies - by "Big Soya" (to coin a term) and the scientists and PR shills who supposedly serve it - while being a consistent purveyor of lies herself. If you don't know the science of soy well enough to see through the BS, even a small amount of fact-checking will show you how tainted this book is as a resource. These are a few examples of my own fact-checking from a review published elsewhere online (Amazon doesn't allow hyperlinks in reviews, but you can find it - with the links to the cited studies - easily with Google). They're not cherry-picked. I've found that pretty well anywhere you dip into this book, the waters are muddied with half-truths, misrepresentations, errors/lies and other tricks of false persuasion: 1. Building her case mostly on a selective reading of animal studies (a common thread throughout the book), Daniel suggests that the rise in soy consumption in the West could be a cause of rising thyroid cancer rates. "Soy can almost certainly be blamed for at least some of the increase in thyroid cancers in that soy isoflavones [weak, estrogen-like compounds found naturally in soy] induce both goiters and thyroid tumours," she asserts. I searched Medline (the index of the world's biomedical research) for an unbiased overview of the research on "thyroid neoplasms" (benign or malignant thyroid tumours) and "soy." I found just three papers, none of which Daniel thought important enough to tell her readers about (ironic, because Daniel is always quick to accuse soy-friendly scientists and "soy apologists" of suppressing evidence - even when they're not: for example, see the letter from Dr. B. L. Strom in Mothering magazine). One study found that high doses of soy isoflavones failed to increase the effect of a thyroid carcinogen in rats. In the other two papers (here and here), researchers from the Northern California Cancer Center sought to find out why Southeast Asian women living in the United States have a high rate of thyroid cancer. Soy wasn't one of the reasons. Women who consumed the most soy had nearly half the risk of those who consumed the least. 2. Daniel cites a five-year clinical trial in which six out of 179 postmenopausal women taking a very high dosage (150 mg) soy isoflavone supplement developed endometrial hyperplasia. None of the 197 women who took a placebo did. "Endometrial proliferation is a precursor of cancer," Daniel warns, implying the women can look forward to a date with the oncologist. She doesn't mention that all of them developed the relatively benign, non-atypical form of endometrial hyperplasia. Research suggests this condition carries a 2% risk of progressing to endometrial cancer - little different from the 1 to 2% risk for women in general. Nor does Daniel reassure her readers that, a year earlier, a study published in the Journal of the National Cancer Institute found that women who had spontaneously consumed the most dietary soy isoflavones were 40 percent less likely than those who consumed the least to have been diagnosed with endometrial cancer. Among the postmenopausal women in the study (they're at highest risk), soy was associated with a 56% lower risk. According to the authors of the study: "Only one [other] study has directly examined the effects of phytoestrogen-rich foods on endometrial cancer risk (16). In Hawaii's multiethnic population, greater consumption of tofu alone or in combination with other soy products was associated with a 50% reduction in endometrial cancer risk." 3. Daniel goes to great lengths to convince readers that soy will put them at risk for pancreatic cancer. "As for the rising rate of pancreatic cancer," she writes, "scientists have known for half a century that trypsin inhibitors in soy protein put stress on the pancreas, contributing to and possibly causing pancreatic cancer (see Chapter 16)." In a pretense to objectivity, she advises: "As yet, human studies do not clearly connect soy protease inhibitors to pancreatic cancer. However...." Not included in Daniel's "howevers" (notably, soy seems to make the pancreas secrete more digestive enzymes) are any of the studies that have actually looked at soy consumption and pancreatic cancer in humans. In a 1996 study from Sapporo Medical University in Japan, people diagnosed with pancreatic cancer were significantly more likely than healthy controls to a) eat more "meats and animal viscera" and b) eat less "vegetables and the traditional Japanese foods, e.g., tofu, deep-fried tofu, raw fish, and tempura." Eight years later, in a similar study from the same institute, the researchers found that "consumption of fish, all soybean products, tofu (bean curds), and natto (fermented soybeans) was associated with decreased risk" of pancreatic cancer. Comparing subjects who ate the most (top 25%) with those who ate the least (bottom 25%), the risk reduction was approximately 50% for fish, tofu and all soybean products combined - and 75% for natto. Moderate meat consumption doubled the risk compared to low consumption. Finally, in a 1988 American study that followed 34,000 healthy California Seventh-day Adventists for seven years, "increasing consumption of vegetarian protein products, beans, lentils, and peas as well as dried fruit was associated with highly significant protective relationships to pancreas cancer risk." While I've only read the abstract of this study, among Seventh-day Adventists - a large proportion of whom are vegetarian - "vegetarian protein products" and beans largely equate to soy. Indeed, the abstract attributes the anti-cancer effect to "frequent consumption of vegetables and fruits high in protease-inhibitor content." Ironically, it's these protease inhibitors - which abound in soy - that Daniel uses weak animal and human evidence to smear as instigators of pancreatic failure and cancer. If only she had told her readers about the studies that "clearly [fail to] connect soy protease inhibitors to pancreatic cancer." 4. Daniel is constantly alleging or insinuating that scientists who publish soy-friendly research are in the pocket of the soy industry. None of the three soy-positive studies above for which I was able to find funding information online declared any support from industry. Rather, all or most support came from the National Cancer Institute of the United States. __________ In the end, this is a book that breaches the contract of trust between writer and reader. Whatever truthful information it contains is so pervasively tainted by untruths that it is, effectively, toxic to anyone unfortunate enough to read it in good faith.