Porphyra is not only delicious, but also nutritious, especially with high iodine content, so it was used in ancient times to treat big neck disease caused by iodine deficiency, which is now called "goiter".

Because laver has the function of softening and resolving hard mass, it can also be eaten by other people with stagnant masses. Porphyra is rich in choline, which can enhance memory.

Because it contains a certain amount of mannitol, it is a strong diuretic and can be used as an auxiliary food to treat edema. Porphyra is rich in calcium and iron, which is not only an excellent food for treating anemia in women and children, but also can promote the growth and health care of bones and teeth in children and the elderly.