Besides containing the broadest range of minerals found in any food (10 to 20 times more than in vegetables), the sodium alginate (algin) in seaweeds absorbs toxins from the digestive tract. An element capable of removing radioactive particles and heavy metals from the body, kelp is particularly high in algin. Green seaweed contains chlorophyll, which is a potent detoxifier. Chlorophyll contains special fibers that bind to and remove numerous unwanted substances from our bodies, essentially aiding the liver with its detoxification responsibilities.
Source: liver support