First, you should be careful with carrot juice. It is loaded with simple sugars and will spike your blood Sugar level off the charts. I know from personal experience. This is not good. You are better eating the whole carrot which has the fiber in it and digests slower. You might as well take water and mix table Sugar in it and drink if you are going to do alot of carrot juice because it has the same effect on your blood Sugar levels.
Do your research on iodine. You do not need alot of that stuff. I used to take Iodine and broke out with a bad case of greasy acne. As soon as I stopped taking the Iodine my Acne cleared up. You may want to ask your doctor about it. It is a trace mineral and that means you only need it in trace amts. It is not a cure all. These people saying that it cured cancer, well they probably caught the cancer in it's early stages and was on other meds not mentioned.