Eat foods high in protein and rich in vitamins, such as milk, eggs, lean meat, fish, beans, seafood, fresh vegetables and fruits. Medicinal materials and foods that can be used as diet therapy are: black sesame, mulberry, Polygonum multiflorum, Ligustrum lucidum, Lycium barbarum, Chinese yam, jujube, black beans, chrysanthemum, lean pork, carrots, spinach, animal liver and so on. It is beneficial to prevent hair from turning white. You can often eat foods rich in vitamin A, such as carrots, spinach, rape, leeks, celery, apricots and other iodine-rich seaweeds, which are very beneficial to your hair. You should add some oil when eating, which can help absorb iodine. 1, and stay optimistic. Being optimistic about life and maintaining a happy mood will help make your hair dark and beautiful. Even if you encounter something unpleasant, even. Don't make your psychological world desperate. Because it is tantamount to punishing yourself for other people's mistakes, it will not only help, but also be counterproductive, and even cause greater misfortune, thus speeding up the pace of white hair. 2. Strengthen nutrition. Hair will turn white if it loses its normal pigment supply. Many scientific studies have proved that nicotinic acid in vitamins, p-aminobenzoic acid, carotene, citric acid, etc. All of them have an important influence on the formation of pigment and its metabolism. If they have obstacles or changes in absorption, storage and utilization, the hair will turn into hoarfrost. In the diet, foods containing vitamin B 1,B2,B6, nicotinic acid, etc. must not be lacking for a long time, otherwise, the hair will turn from black to gray and then white. In recent years, scientific research also shows that some trace elements, such as copper, are lacking. In order to prevent and treat baldness, we should pay attention to diet recuperation, and usually eat more beans, vegetables, fruits and miscellaneous grains rich in vitamins, so as to fully absorb the nutrients that produce black hair. The livers of various animals contain more copper elements, and tomatoes, potatoes and spinach also contain a certain amount of trace elements such as copper and iron, which should be eaten properly. Of course, those who suffer from white hair due to lack of vitamins can also take drugs such as vitamins B2,B6 and multivitamins. It is necessary to take .3 for a long time under the guidance of a doctor to treat diseases. Some infectious diseases and chronic focal inflammation, such as dental caries, tonsillitis, suppurative sinusitis, etc., can also cause white hair through bacterial action and nerve reflex. In endocrine, pituitary gland, adrenal gland and autonomic nervous system are closely related to the secretion function of black excitatory hormone, which promotes the formation of melanin. Endocrine is normal, and more black excitatory hormone is secreted, resulting in more melanin and darker hair color. On the contrary, white hair will grow in clusters. In addition, sexual dysfunction can also cause white hair. Therefore, in order to prevent long white hair, the above diseases must be treated as soon as possible. 4. Massage the scalp. In order to prevent white hair, you can insist on drawing a small circle on the scalp with your index finger and middle finger after getting up in the morning and before going to bed, and rub the scalp: first from the forehead to the back occipital part, and then from the forehead to the occipital part through the temples on both sides. Massage each time/ Rub it back and forth for 30 ~ 40 times per minute, and then gradually increase it to 5 ~10 minutes. This massage can accelerate the local blood circulation of hair follicles and make the hair papilla get sufficient blood supply. In this way, the nutrition of pigment cells in the hair bulb is improved, the cell activity is enhanced, and the division is accelerated, which will be beneficial to secrete melanin and blacken hair.