Guso or Eucheuma Spinosum is rich in iodine, calcium, antioxidants, vitamins and a natural fiber called alginate. Eucheuma spinosum, or green guso, is usually harvested for local consumption. It has a crunchy texture, but become softer when boiled for a few minutes. It has a naturally salty flavor. It is also contains a concentrated source of iodine and an amino acid called tyrosine. Your thyroid gland requires both to function properly and it contains a wide range of vitamins and minerals, including iodine, iron, and calcium. Some types can even contain high amounts of vitamin B12. Moreover, it’s a good source of omega-3 fats. Seaweed contains a wide range of antioxidants, such as vitamins A, C and E, carotenoids and flavonoids. These antioxidants protect your body from cell damage. Seaweed contains fiber and sugars, both of which can be used as food sources for the bacteria in your gut. This fiber can also increase the growth of “good” bacteria and nourish your gut. Seaweed may help you lose weight because it contains few calories, filling fiber and fucoxanthin, which contributes to an increased metabolism.