Jamaican Seamoss and bladderwrack  do for your body? Some dietitians are particularly impressed by its potential for promoting gut health. “Improved digestion is one of the most popular uses for sea moss, as it acts as a prebiotic in the gut,” says Richards. Prebiotics, as a reminder, are ingredients that feed the good bacteria in your gut, which promotes their growth.  iodine makes Bladderwrack a great choice in the support of a healthy functioning thyroid gland when more iodine is required for optimal function. Also of interest is the high amount of fucoidin found in Bladderwrack. Fucoidans and Fucans are sulfated polysaccharides found in most brown seaweeds. These substances have been researched for modulating a healthy inflammatory response, and have shown strong properties for supporting a healthy immune system and intestinal flora. It is also recognized as a source of other naturally occurring minerals such as iron, zinc, magnesium, and potassium.