Selenium deficiency may cause a variety of diseases, including but not limited to the following:

Developmental retardation: Selenium deficiency will affect children's growth and development, leading to developmental retardation in height, weight and intelligence.

dry hair: lack of selenium will cause hair to lose its luster and become dry and short-tempered.

allergic dermatitis: selenium deficiency may increase the risk of allergic dermatitis, leading to skin erythema, itching and other symptoms.

Liver damage: Long-term selenium deficiency may lead to liver damage, even liver cirrhosis, liver cancer and other diseases.

cardiovascular diseases: selenium deficiency will increase the risk of cardiovascular diseases, such as coronary heart disease and hypertension.

In diet, selenium can be supplemented by the following foods:

Meat: lean pork, mutton and other meats are rich in selenium, but attention should be paid to the intake.

eggs: quail eggs, goose eggs and other eggs also contain more selenium, which can be used as one of the ways to supplement selenium.

fruits and vegetables: alfalfa, shepherd's purse, garlic, mushrooms, apples and other fruits and vegetables also contain some selenium, so the intake can be appropriately increased.

bean products: soybeans and soybean products also contain more selenium, which can be eaten in moderation.

Seafood: Spanish mackerel, shrimp, hairtail, perch, eel, scallop and oyster in seafood are also rich in selenium, which can be eaten in moderation.

cereals: cereals such as oats, buckwheat and sorghum are also rich in selenium, which can be eaten in moderation.

It should be noted that selenium needs to be supplemented in moderation, and excessive intake may cause selenium poisoning and other related symptoms. Therefore, in order to achieve the goal of balanced nutrition, we should diversify the intake of nutrition and reasonably match the food.