Although seaweed is a kind of food with good nutritional value, it should be consumed in an appropriate manner, such as eating too much of it may have some harmful effects on the organism, such as indigestion, resulting in a heavier metabolic burden and so on. Reasonable consumption of seaweed can supplement these nutrients for the body. However, if you eat too much, excessive intake will easily increase the burden of gastrointestinal digestion, which may cause indigestion. As the iodine content in seaweed is relatively high, accounting for about 2462.6μg in 100 grams, for patients with hyperthyroidism, it is necessary to pay attention to eat less, to avoid affecting the condition. In addition, some open bags of edible seaweed, which will add some food additives and salt, and this kind of seaweed eaten too much is also easy to cause the body to intake of salt exceeds the standard, which will lead to the body’s metabolic burden increased. Especially for some need to control the salt intake of patients with chronic diseases, such as hypertension, coronary heart disease and other patients, do not eat more salt-containing seaweed, so as not to contribute to the stabilization of the condition.