I have recently found claims that iodine can prevent cancer. Eg:
- breast cancer
- a variety of cancers
- "especially in breasts, ovaries, uterus, prostate and thyroid gland"
and many more sites. Wikipedia states:
Whether iodine/iodide will be useful... in women with breast cancer has not been determined clinically.
The same section implies a positive correlation between iodine and reducing the risk of stomach cancer.
So can iodine really prevent or at least reduce the risk of some cancers? If so, does that apply to more cancers beyond stomach cancer?