I found this interesting article:
Are you eating your way to breast cancer?What if you found out that if you consume foods such as peanut butter and beef, you might well be eating fungal toxins that could cause breast cancer?Would you change your diet? Would you cleanse your body? One of the most common hormones used with cattle is zearalone, which is a fungal product whose toxic byproducts cause breast tumors. Actually, a whole host of foodstuffs contain fungal toxins. Mycotoxins are toxic fungal metabolites that are structurally diverse. Yet they are common contaminants of the ingredients in animal feed and human food.They or their effects can be transmitted from animal feed to the animal to humans.To date, mycotoxins with carcinogenic potency in experimental animal models include aflatoxins, sterigmatocystin, ochratoxin, fumonisins, zearalenone, and some penicillium toxins.In one 1993 study, researchers examined human breast cancer tissue for evidence of the presence of aflatoxin, a recognized potent carcinogenic mycotoxin found in inferior peanut butter and other nut and dairy products. To see the rest of this article go here http://www.wholebodywellnesssolutions.com/fumyfobrca.html

Here is an excerpt from http://www.wholebodywellnesssolutions.com/fungus101.html

There are millions of Americans who I believe would benefit tremendously by taking antifungal remedies, but one major problem exists-physicians rarely prescribe them because they feel that infectious agents are almost exclusively bacterial or viral. Through the years, when symptoms of unknown etiology (cause) exist, I have asked hundreds of physicians to prescribe a nontoxic, no-side-effect drug called Nystatin in hopes of reversing the symptom or disease in the patients. Rarely has this occurred, however, for two reasons: So often, the prescribing physician does not believe in the fungus-disease phenomenon, and also he is concerned that Nystatin may harm the liver of the patient. The fungus-disease link is very well documented in the scientific literature, the same literature that also documents the harmlessness of Nystatin.What is an educated patient to do when an antifungal approach seems so logical to them, yet their physician will not prescribe antifungal drugs? First and most importantly, understand why the physician will not prescribe antifungal drugs, because there may be a very good reason. Ask the doctor if he would object to your trying the antifungal diet and natural, nontoxic antifungal remedies. Most docs will not object, believing that these antifungal remedies are not as strong as antifungal drugs; yet, as you will read, some are more capable of killing fungus than even the most powerful antifungal drugs.