Wakame as a nutritious food loved by the majority of people, but if a large number of long-term consumption of wakame will cause some harm to the body, such as gastrointestinal discomfort, increased urination, etc. 1, gastrointestinal discomfort: because wakame contains a lot of dietary fiber, and wakame is a cold food, too much consumption will increase the burden on the gastrointestinal tract, easily lead to bloating or diarrhea and other symptoms of gastrointestinal discomfort. 2, increased urination: wakame contains a high-quality hypertonic diuretic called mannitol, if a lot of consumption of wakame may lead to increased urination, the phenomenon of frequent urination, to elderly patients or patients with physical inconvenience; 3, goiter: wakame contains a lot of iodine, if a large number of long-term consumption of wakame will lead to excessive iodine content in the body, thereby increasing the chances of goiter. People with hyperthyroidism are not recommended to eat. In addition, hypotensive and hypoglycemic patients should eat a small amount of wakame, because wakame contains kombucha and fucoidan, which has a certain impact on lowering blood pressure, lowering blood lipids and controlling elevated blood sugar. If hypotensive and hypoglycemic patients consume a large amount of wakame for a long time, it may aggravate the symptoms of hypotension and hypoglycemia and cause discomfort, which is not good for health.