I've been seeing flyers around lately for a upcoming lecture in D.C. by Weston A. Price Foundation president Sally Fallon. Today I got spam from them about it, which prompts me to post a bit about these shills and quacks.
The Weston A. Price Foundation is one of the primary groups responsible for spreading some of the FUD that you may have heard about soy products. Their interest (both philosophical and financial) is in promoting dairy consumption, specifically raw milk. They make claims about supporting "traditional diets", which would be fine - except that the use of dairy products is fairly new in the 200,000 years history of the human species, dating only to the neolithic revolution of about 10,000 years ago; and of course dairy consumption was just about unknown in many areas of the world where lactose intolerance is common. In fact, Price himself wasn't such an advocate of dairy.
They advocate a diet high in saturated fat, which according to our best scientific knowledge is linked to a higher risk of heart disease and stroke. WAPF simply denies that such a link exists, sort of like how tobacco companies simply denied the link between smoking and lung cancer.
On the soy front, they point to studies where animals were injected with extracts of soy protein and got sick, and ignore studies where humans ate traditional soy foods and improved their health. (It is true, though, that overconsumption of processed soy foods is not healthy. Choose tempeh over TVP.)
Of course, even a stopped clock is right twice a day, and they do have a good point about the prevalence of processed food in the standard Western diet. Apart from that, though, it's mostly nonsense.
Aug 2011 update: after three years of comments -- some insightful, some ridiculous -- I've gotten tired of rebutting the same old WAPF propaganda over and over, so I'm closing comments on this post. A final comment here, and a related post here.