Porphyra contains a certain amount of mannitol, which has a strong diuretic effect and can be used as an auxiliary treatment for edema.

It contains unsaturated fatty acids, can reduce blood lipid and cholesterol, and has preventive and adjuvant therapeutic effects on cardiovascular diseases and obesity.

Porphyra is rich in iodine and can be used to treat thyroid diseases caused by iodine deficiency.

It contains a lot of calcium, which can supplement a lot of calcium, promote the growth and health care of teeth and bones of children and the elderly, and prevent osteoporosis;

Porphyra yezoensis also has a certain role in preventing and treating tumors, and can be used for adjuvant treatment of brain tumors, breast cancer, malignant lymphoma, thyroid cancer and other diseases.