Sea veggies are a great source of Iodine to prevent Iodine deficiency disease & cancers, but simply do not contain enough Iodine to destroy cancer or disease that is already in progress.
Cancers occur in folks who are severely iodine deficient to begin with. So do these folks also get fibrocystic breast disease, PCOS, uterus problems, prostate problems & hormonal problemss. There is a Pandoras Box of disease that occurs from iodine deficiency. https://sites.google.com/site/iodinereferenes/home
Dr. Brownstein & others give their cancer patients 300mg of Iodoral or Lugols with co-supplements daily so the immune system can kill ALL of the cancers. There is simply no other way to get that amount of iodine.