Although it is highly specific for prostate cancer, there are other tissues that express PSMA, especially the salivary glands and lacrimal glands. Fish oil has been shown to reduce inflammation. Your body doesn't have the ability to produce thyroid hormone if it is low in iodine. It is possible for it to lead to enlargement. Metastasis to the bone is thought be venous. These foods may also increase serum insulin and serum IGF-1I levels, which could stimulate cancer cell growth. Being overweight and smoking are also more closely linked to prostate cancer.