The cause of baldness is closely related to the effects of hormones and factors such as diet and mental stress.
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Iodine can make hair soft and shiny and prevent it from drying out. It can make the secretion of thyroid hormone, and the relationship between thyroid hormone and hair growth is extremely deep. Animal foods are iodine-free, and plants such as seaweed and wakame are rich in iodine, and these seaweeds also contain large amounts of calcium and iron. The hair contains sulphur-containing amino acids. For example, cystine, methionine, and the like. All of these amino acids belong to proteins and are abundant in proteins contained in soybeans, groundnuts, and sesame. In ancient times, it has been said that eating sesame seeds can “rejuvenate hair and white hair becomes darkâ€. This is scientifically reasonable. At least such plant foods can supply the hair with the main nutrients. Secreted from the body and accumulated in the head of cholesterol, not only caused by dandruff, but also a major cause of hair loss, baldness, because it blocks the sweat glands and secretory glands, weakened the metabolism of the scalp, hair growth due to difficulties. Excessive mental stress can cause local alopecia areata, and even severe cases change into bald head overnight.
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Bald patients can be improved and prevented through medical treatment and dietary attention. Carefully choose foods that are good for hair growth:
(1) It is recommended to supplement vegetable protein and eat more food such as soybean, black sesame, and corn. 
(2) It is recommended to supplement iron, eat soybeans, black beans, eggs, poultry, octopus, shrimp, cooked peanuts, spinach, squid, bananas, carrots, potatoes, etc.
(3) Yi Shi foods containing high levels of iodine. 
(4) should eat more alkaline substances, such as fresh vegetables, fruits.
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(5) should eat more foods rich in vitamin E, such as celery, leek, spinach, leek, mustard, day lily, black sesame seeds and so on.
(6) Eat more mucoprotein containing bone glue, such as beef bone soup and rib soup. 
Eat and avoid the following foods: 
(1) Smoke, alcohol, and spicy foods such as onion, garlic, chives, ginger, pepper, pepper, cinnamon, etc.
(2) Avoid greasy, hot food (fat, fried foods). 
(3) Avoid foods rich in sugar and fat, such as liver, meat, onions and other acidic foods.