Benefits of Iodine for Health

I was a Navy Hospital Corpsman back in the 1940's and 1950's. At morning sick call in many bases I was stationed at it was normal treatment to spray throats with iodine for common cold symptoms, inflamed tonsils and many other conditions. Nearly every treatment room had an EENT machine that we used to spray with. I forget the solution, but the pharmacy techs made it up. Very effective. When attached to the marines as a medic, used iodine for water purification in canteens all the time. Very effective.