Focus on foods high in iodine, B - vitamins, selenium and zinc: Nori rolls with Hiziki, brown rice, avocado, carrots, cucumbers and Bragg's Amino Acids. (mindbodygreen.com)
One seaweed species, hijiki (also commonly spelled hiziki), absorbs so much arsenic from the sea water that it is not safe to eat. (nutritionfacts.org)