Thanks for your helpful advice. I will ask Russian doctor next time I see him. Meantime I will educate myself with the helpful information on the link you so kindly gave.
Kelp might help your thyroid problem or make it worse.
http://thyroid.about.com/od/thyroidbasicsthyroid101/a/5lies.htm
An excerpt from the above site:
Natural health practitioners who don't truly understand thyroid function are often quick to tell you that "thyroid problems mean you need iodine" or iodine-containing herbs or supplements, such as kelp, bladderwrack and bugleweed.
If you are truly iodine deficient, iodine may be able to help your thyroid. One study done in 1998 found that over the past twenty years, the percentage of Americans with low intake of iodine has more than quadrupled. Currently about 12 percent of the U.S. population is iodine deficient, up from less than 3 percent in the early 1970s. So, for some people, iodine deficiency may be a factor in their thyroid problem.
But for some people, iodine or iodine-containing products make worsen autoimmune thyroid problems, both Hashimoto's and Graves' disease, and cause enlargement of the thyroid (goiter). Before you start iodine, consider having urinary iodine measured to see if you have an actual deficiency, and pay close attention to any symptoms that develop after you start to take iodine.