The problem is that most food labels do not specify which red dyes are used. Better safe than sorry. Please always check with your physician. Food prepared from any fresh meats, fresh poultry, fresh or frozen vegetables, and fresh fruits should be fine for this diet, provided that you do not add any of the iodine-containing ingredients listed above to avoid. In the past many patients have contacted manufacturers asking whether or not they used iodized salt in their products.
Manufacturers often use iodine-base cleaners on their machinery.
This is especially true in the dairy industry. Iodine is also used to clean the teats of milk-producing animals. Because fewer and fewer manufacturers have been using iodized salt in their food processing, there seems to be a rise in the number of goiter cases. It might become the practice to start using iodized salt again. Because of this, the tendency to gain weight while hypothyroid is greatly reduced The key to surviving this diet is being prepared.