The PSA discussed in the study above stands for prostate-specific antigen. It is a protein that can be measured in the blood to determine the health of the prostate. A low PSA value is an indicator of prostate health. A higher PSA value is an indicator of a prostate condition, some benign like prostatitis or BPH, and some life-threatening such as prostate cancer. (7)
Nodule Growth and Prostate Cancer.
Addressing an iodine deficiency can halt the progression of cysts and nodules, advancing through a change in a structure called hyperplasia, a precursor for cancer. These prostate nodules often begin to form in response to inflammation in the body. Fortunately, not all nodules are malignant, but some do result in prostate cancer, which is reason enough to avoid nodule development.
Research has shown that iodine can suppress the growth of xenografts of human prostate cancer in nude mice (mice with weak immunes systems.) (8) The takeaway from this is positive. Iodine seems to prevent prostate cancer cells from increasing their rate of growth, even in the presence of a weakened immune system.