Carcinogenicity of casein

[Yoga Nurse]

... Dr. Campbell discusses the fact that exposure to hepatitis b virus leads to liver cancer only in the presence of animal protein.

Could you please post the reference? Thanks.

Actually, I'll go you one better. For only the amazing, low price of $11.53, you too, can own a copy of "The China Study". I would urge you to invest. It might just save your life.

http://www.amazon.com/China-Study-Compr ... 380&sr=8-1

Thanks Hope.

Anna

[momof4]

How about the library? I get tired of people saying they can't read a book that's recommended here because they'd have to pay for it. The China Study and Dr McDougall's books are available here, in the pork capital of world, so they're likely available all over the country.

[TanneryGulch]

I meant to get back to this but took a break from the forum. I was reminded when a guy at work brought it up the other day.

Going back through my copy of The China Study, I find no experimental evidence for his generalization from casein in rat chow to total animal protein in rat chow, let alone in human diets. Furthermore, I see no basis for extrapolating the monster doses of casein in the rat chow to the realistic range of casein in a human diet. (NB: The 5% level that was completely safe for the rats equals a quart of milk or 1/4 lb of cheddar cheese every day on a 2000-calorie diet.) Since he doesn't cite any evidence and nobody here has been able to offer any either, I infer that it doesn't exist.

Which leaves his argument standing on epidemiology. Campbell devotes only one chapter out of his book to the actual China-Cornell-Oxford Project; the rest is stats (mostly between-countries) hand-picked from all over the place to make his point. Admittedly, he has a lot of them. Like everybody, I've never seen the actual 900-page China Project paper, but I have read reviews of it that call into question his interpretation of the data, a lot of which seem to be first-order correlations. The tabulated data I've seen on the web don't support him at all; in fact, they showed a statistically insignificant negative correlation with meat and a significant positive one with wheat. Meanwhile, the massive WCRF/AICR meta-analysis found milk consumption to be protective against colorectal and (weakly) bladder cancer (and weakly risky for prostate cancer).

In other words, the epidemiological data on this are mixed, period. Here's an example from Campbell's very own Cornell: http://envirocancer.cornell.edu/factshe ... .dairy.cfm

Now, the problem I have is that anytime a contrary study comes up, such as one showing milk consumption reducing the risk of breast cancer, the response from the vegan crowd is invariably, "Well, of course there's the odd study here and there, but they were probably methodologically shaky [not that I'm going to look into it], and we know that the consensus and preponderance of evidence [by which they mean The China Study, i.e., the lay book] is crystal clear overall." This amounts to a circular argument.

I'm of course not arguing that eating meat/dairy ad libitum is safe. But unless I've missed something, we need to stop running around citing this book as proof that any amount of animal protein consumption causes cancer and that a pure vegan diet is safer than one with a small amount of animal products. (Geez, I've even seen this book taken to mean that all cancers are caused only by eating animals. E.g., "I read about cancer in wild herbivores; how's that possible when they weren't eating meat?")

[weaverinva]

Hello all,

An interesting read, even if old. Some of you may want to disect the work of Jane Plant, a UK researcher who has written extensively on Breast and Prostate cancer correlations to casein intake. I have her several books but have not had time to read them yet. They seem well done though.

Before her updated "Your Life in Your Hands" the title of her book was "The No-Dairy Breast Cancer Prevention Programme". I don't think that title would be popular to some.

Also it may not weigh in on the cooked versus raw situation.

All the best,

Mike

[nonyabizz]

I'm of course not arguing that eating meat/dairy ad libitum is safe. But unless I've missed something, we need to stop running around citing this book as proof that any amount of animal protein consumption causes cancer and that a pure vegan diet is safer than one with a small amount of animal products. (Geez, I've even seen this book taken to mean that all cancers are caused only by eating animals. E.g., "I read about cancer in wild herbivores; how's that possible when they weren't eating meat?")

Dr. Campbell does not claim that his book is proof. Only that he presents some compelling evidence.
A more eloquent response in his own words is contained here:

http://www.vegsource.com/articles2/camp ... sponse.htm