IMO you don't need Iodine or anything else physical.
All of disease is said to be the result of physical causes. This is because there is a fundamental problem at the very foundations of modern medicine. The foundation that says the body is a machine. This is a money making paradigm and nothing else.
Once you understand that the body is purpose-driven and not a machine, then you are in the driver's seat and not the doctors. Ideas a critical in how the body reacts and functions. I am in the process of putting the underlying conditions of disease as I have come to understand them on youtube in a series of videos but I have got the first three up and they give a good foundation.
introduction and a critical experience I had that turned my university education upside down. https://www.youtube.com/watch?v=7nxUl19yZU0
Another video I have finished and which might be useful is the one on placebo and nocebo effects. I found that all diseases are a nocebo effect. In it I use allergies as an example. You'll find it here: https://www.youtube.com/watch?v=Ts2hlGe4qoo
Once you see the mind /thoughts - body connection your body will heal itself and you will enjoy good health from then on.