Organic Sea Kelp comes from *Ascophyllum nodosum*, a brown seaweed pulled from cold, clean waters. This whole food concentrates iodine, a mineral the body uses to make thyroid hormones.
People add it to fill gaps when their diet runs low on iodine-rich foods. Many choose a whole-food kelp over synthetic iodine pills. Absorption shifts with your current iodine level. Taking more than you need will not boost thyroid output and can cause trouble from too much iodine.
Iodine amounts swing a lot between batches and brands, even with organic certification. Heavy metals like arsenic can show up in untested sources. These swings make careful dosing hard. Excess iodine can disrupt thyroid function instead of helping it.