Tom,
I agree, obviously, with the notion that saying wonder bread causes cancer is silly...as I stated above.
You kind of go on a crusade in your post, though, which I would like to address for a second.
Firstly, bread and grains CAN be a part of your diet -- it certainly won't kill you -- but i see no reason why it SHOULD be in a diet. All of the benefits of bread (like B vitamins and carbs, pretty much...) can be found in much better sources that don't carry the same burden of having to watch portions vigorously...fruits and vegetables, for example. I still vote that, in practice, for >90% of the population, it is way more practical and easier to just avoid breads and grains when possible. Though, if you HAVE to eat it, its not like eating poison, necessarily.
Secondly, in terms of dairy, the claims of cancer causing are pretty much unfounded. The claims of hormones causing a decrease in the age of sexual maturity only holds a weak link at very best. (Let me preface my next statement with the fact that I eat TONS of cheese and drink at least a half gallon a milk a day out of habit these days...) The problem with milk, though, is that in practice it is again (1) easy to overconsume and (2) easy to misplace it in the diet when it can be against the goals of the athlete. Overall, milk can be beneficial in weight loss (for large populations) but there are others (still large populations) that actually get a pretty high insulin response JUST from the proteins in milk. Coupled with lactose it can cause a high insulin response when compared to other sources of protein. With this in mind, it can get in the way of some people (particularly at higher levels of training like more advanced traceurs) who want to cut some of the extra down.
This all stems back to the idea that one should experiment and re-experiment with their diet on a consistent basis.On that note, you're absolutely right about the nitrates in meat, as one would expect
The point is that this goes back to where you and I typically diverge in our views. I am more a proponent of propagating easy, simple and beneficial practices whereas you are a proponent of giving everyone the big picture, even if it is a bit more complicated, and having them make their own choice. While I do think your approach is noble and helps people (including myself), for most beginners here I tend to find that the short and simple advice suffices until people come to me asking "WHY!?!"...in which case I answer them.
This may have appeared to be a tangent but I feel it was worth mentioning since, in the rest of this thread, we are definitely against grains/bread and some readers may be confused where this sudden "change of heart" came from in the community.
