That is true. Raw food does not have to be cold. However in general the quality of raw food is more cold than hot. "Rough" is another quality of "rLung" or "wind".
Cayenne pepper while raw, is both hot and rough. What I am saying is these aspects of the characteristics of the elements (earth,water,fire,wind and space) are not mutually exclusive. The elements are part of our experience and the stasis that exists in their harmony contibutes to our good health and well being. When that stasis is disturbed, relative to each individual's characteristics, we don't feel so good.
What I understand about Iodine comes from Dr. Jarvis. He repeatedly spoke of the human body's ability to do more with less. Buckminster Fuller, the architect and inventor of the geodesic dome also spoke about doing more with less.