There are many types of seaweeds, including nori, kombu, kelp, arame, wakame, and Makebu. Seaweeds contain all 100 minerals needed by the body. The iodine in seaweeds supports the thyroid gland and helps protect the body against damage caused by radiation exposure. Seaweed has been used traditionally both internally and externally to cleanse the blood, reduce swellings and tumors, and absorb and remove toxins from the body. As little as ½ ounce daily offers protective effects. Seaweeds can be crumbled into soups, onto salads, and are a component of sushi dishes.