1. Seafood has the highest iodine content, especially kelp, jellyfish, laver, moss strips and mussels. Generally speaking, the iodine content in most terrestrial plants is low, with an average of no more than 1.0mg/kg. Only spinach and celery have higher iodine content, which can reach 1.64 mg and 1.60 mg per kg.

2. The iodine in seafood is several times as high as that in land plants, and some are as high as dozens of times. Usually, the iodine content of kelp we eat is 0.0 mg/kg/kloc-0. Marine fish and laver are also good foods to supplement iodine in daily life. Eating kelp regularly can not only supplement iodine in the body, but also ingest other kinds of trace elements, amino acids and vitamins.

Therefore, the only food with high iodine content in nature is seafood, so we should pay more attention to eating this kind of food at ordinary times. They are the best natural iodine supplement products.

Extended data:

The main function of iodine:

1, maintain the body's energy metabolism and heat production. The reduction of thyroid hormone synthesis caused by iodine deficiency will lead to the impairment of basic life activities and physical decline, which is lifelong.

2. Promote physical development. Thyroid hormone regulates bone development, sexual development, muscle development and height and weight in children's growth and development. Thyroid hormone deficiency can lead to symptoms and signs of physical development, sexual development, short stature and muscle weakness.

3. Promote brain development. At some stage of fetal or infant brain development, we must rely on thyroid hormone. Its deficiency will lead to different degrees of backwardness in brain development and different degrees of mental retardation after birth. This obstacle is basically irreversible.

References:

How much iodine does a normal person need every day? What are the foods containing iodine? -People's Network