Kelp is a common natural seaweed food, consumption of kelp has certain benefits for the human body, usually not clinically clear that there are four major contraindications to eating kelp, but consider that because kelp contains a lot of iodine, patients suffering from hyperthyroidism eating kelp may aggravate the development of the disease, so should be avoided. In general, kelp is rich in nutrients, such as protein, mucopolysaccharides, dietary fiber, as well as trace elements such as iodine, magnesium, zinc and many other minerals, and it is easy to prepare in daily life and has high food value, so you can choose to eat it in moderation according to your preference. However, according to Chinese medicine, kelp is a cold food, so people with a cold spleen and stomach should not eat too much of it, and pregnant and lactating women should not eat too much of it. In addition, when processing kelp, you need to avoid prolonged soaking, because soaking in water for too long will break down the nutrients in the kelp, such as water-soluble vitamins and inorganic salts in the kelp will be lost. Soaking time is too long, kelp toughness will also be reduced, affecting the taste of consumption. Although the consumption of kelp has certain benefits, but daily life should be more reasonable diet, pay attention to the diversity of food choices, can be a variety of vegetables, meat with cooking to ensure balanced nutrition, to maintain the body’s metabolism, to ensure health.