1, kelp cooked overnight, it is not recommended to continue eating. Cooked kelp stored overnight at room temperature is likely to cause food bacteria to grow and may deteriorate, so try not to eat it. It may cause gastrointestinal discomfort, nausea, vomiting, diarrhea, abdominal pain and other symptoms after eating, and may even cause food poisoning. Even if it is put in the refrigerator, it is not recommended to eat it overnight, because other foods will be stored in the refrigerator, and there may be other miscellaneous bacteria pollution. Even if it is well preserved and its taste and smell have not changed, it is not recommended to continue eating it, because the cooked kelp will lose its nutrition overnight, which will lead to the decrease of food freshness, the kelp will become soft and rotten, and the taste will become worse.

2. Kelp contains high nutrients, is a low-calorie food, and also contains minerals, which can promote digestion. Eating kelp properly has certain benefits. It should be noted that the time should not be too long when soaking kelp. If the soaking time is too long, it may lead to the reduction of nutrients in kelp, such as common inorganic salts or water-soluble vitamins, or it may lead to no toughness and easy deterioration.