Eating seaweed for a long time will affect the absorption of calcium, which will lead to calcium deficiency, because seaweed contains more iodine, which is easy to induce thyroid disease. In addition, most seaweed products nowadays contain more monosodium glutamate (MSG) and salt, which may lead to high blood pressure and other diseases if you eat too much. In addition, since seaweed is very sensitive to storage conditions and is prone to spoilage, consuming spoiled seaweed may not be good for the stomach and intestines. Generally people with weak spleen and stomach and prone to bloating should not eat seaweed. However, eating seaweed in moderation still has some benefits, with the effect of resolving phlegm, diuretic and clearing heat. It is recommended that seaweed should not be eaten continuously for a long time, and drink more water after eating

Children can eat more seaweed appropriately, which can be a better supplement of vitamins as well as minerals. For example, seaweed is rich in vitamin B, vitamin A and vitamin E. In the case of children suffering from vitamin deficiencies, the children eat more seaweed, can play a good role in supplementing. Seaweed is also rich in iodine, which can prevent iodine deficiency if eaten by children. However, excessive consumption of seaweed by children will also have some disadvantages, can cause children's salt intake is too high, because seaweed in the processing time, often add salt. If children eat more seaweed, resulting in excessive salt intake, can cause increased burden on kidney function, high blood pressure and so on