A change in your voice or a lump in your throat could be a sign of a thyroid disorder. One way to check is to take a good look at your neck to see if you can detect any signs of thyroid swelling. You can do a physical check of your own thyroid at home with these directions from The American Association of Clinical Endocrinologists: Using a hand mirror, watch your throat as you swallow a drink of water.
The Exclusion Zone covers an area of approximately 2,600 km2 (1,000 sq mi) in Ukraine immediately surrounding the Chernobyl nuclear power plant where radioactive contamination from fallout is highest and public access and inhabitation are restricted.
As of 2005, caesium-137 is the principal source of radiation in the zone of alienation around the Chernobyl nuclear power plant. Together with caesium-134, iodine-131, and strontium-90, caesium-137 was among the isotopes distributed by the reactor explosion that constitute the greatest risk to health.s of 2005, caesium-137 is the principal source of radiation in the zone of alienation around the Chernobyl nuclear power plant. Together with caesium-134, iodine-131, and strontium-90, caesium-137 was among the isotopes distributed by the reactor explosion that constitute the greatest risk to health.