Well I've given you guys all the information I can. You can keep denying it but until I see evidence I won't be convinced. I, as a scientist, have embraced many aspects of holistic medicine. However, we should also aim to keep a certain level of scientific integrity. Some of the things that have been said in this thread are way off base; there's literally no evidence for more than one or two cancers being caused by allergies, and to say otherwise is a truly ridiculous assertion.
A lot of the stuff in the diet/holistic medicine threads is hokus pokus mumbjo jumbo. Most of the people base their assertions on a book they read a long time ago, on a blog they found through a google search, or they just base their assertions on the fact that they know a really smart person.
That being said, I would not argue that allergies cause cancers. However, I would argue that chronic exposure to foods which cause allergies will lead to chronic inflammation and chronic inflammation does cause cancer.
People should be more careful of assuming that correlation is equivalent to causation. For example; there are some cancers that are correlated with autoimmune diseases. Do they both have the same cause? Maybe, but it's more likely that an improperly functioning immune system is simply unable to destroy cancer cells that arise as an outcome of normal functions, and indeed there is ample evidence for this. As in, the cancer is not an outcome of 'allergy', but rather of autoimmunity, which itself can be the outcome of 'allergy'. But even then, these are a minority of cases. Lung cancer in smokers is not caused by soybean 'allergy'. That simply isn't logical; not only is there no evidence in favor of this claim, but there is also an abundance of evidence against it.
There are certain autoimmune conditions where I would agree. There are a number of tumor-suppressing genes expressed as part of the immune system and dis-regulation of these genes or their protein product can in fact lead to an cellular environment where cancer is allowed to develop.
That being said, I would once again argue that autoimmune diseases where the body attacks itself will create an environment of chronic inflammation and chronic inflammation can cause cancer. In a chronic inflammatory reaction, there will be recruitment of cytokines, growth factors, reactive oxygen species, and hydrolytic enzymes. This creates a mutagenic environment which can cause cancer to develop.
Edited by dylonspythotfyre, 20 January 2014 - 11:37 AM.