Regarding the prevention and treatment of hair loss, what trace elements are supplemented in detail and seek a comprehensive answer. It is best to have a healthy diet to help prevent and treat hair loss. . Supplement iodine. The luster of hair is related to the function of thyroid. Iodine supplementation can enhance the secretion function of thyroid gland and is beneficial to hair bodybuilding. You can eat more kelp, seaweed, oysters and other foods. 2. Vitamin E supplementation can resist hair aging, promote cell division and make hair grow. You can eat more fresh lettuce, cabbage, black sesame and so on. 3. Supplement plant protein. If your hair is chapped, you can eat more foods such as soybeans, black sesame seeds and corn. 4. iron supplementation. People who often lose their hair often lack iron. Iron-rich foods include soybeans, black beans, eggs, hairtail, shrimp, cooked peanuts, spinach, carp, bananas, carrots and potatoes. 5. Eat more fresh vegetables and fruits containing alkaline substances. One of the factors of hair loss and yellowing is that there are acid toxins in the blood, which is due to physical and mental fatigue and long-term excessive consumption of pure sugar and fatty foods, which makes the body metabolize and produce acid toxins. Acidic substances in liver, meat, onions and other foods are likely to cause too many acidic toxins in the blood, so eat less. Black sesame porridge can prevent hair loss, which is a good anti-hair loss product. Take 250 grams of black sesame seeds, mash them and add japonica rice to cook porridge. Cook Fructus Lycii, Polygoni Multiflori Radix, Radix Rehmanniae Preparata and Corni Fructus together, take juice, add walnut and black bean, cook until rotten, and air dry twice a day, 6 grams each time. Walnut kernel 1 kg, soaked in cold water for 3 days, and peeled after taking out. Put a proper amount of sugar in the pot, pour in walnut kernel and stir well, and then eat after cooling. Take 10 capsules twice a day. In addition, scalp massage is also a very useful method. It can promote blood circulation and help prevent hair loss. We know that hair loss has genetic factors. Modern women are prone to hair loss because of heavy workload and pressure, especially in spring and autumn. In addition, due to the production, taking drugs, using inferior shampoo, improper combing methods, etc. , will cause hair loss. Therefore, to prevent alopecia, we should find out the reasons and pay attention to choosing shampoo rich in protein.