White-haired teenagers, although some of their hair turns white, do not have any diseases. After long-term observation, many people have been in good health and have a long life. Therefore, the appearance of white hair does not mean that it is a harbinger of illness or aging, and it does not have much impact on their health, so there is no need to worry too much about some white hair. If you worry about a few gray hairs all day, you may end up with more gray hairs, forming a vicious circle. Therefore, young people with white hair should keep a cheerful spirit, pay attention to the combination of work and rest, and don't be too nervous and worried. Adjust the diet structure and eat more foods rich in vitamin B and trace elements such as copper, zinc and iron, which are also indispensable raw materials for melanin synthesis. Black sesame seeds and walnuts also have a certain effect on turning white hair black. Head massage also has a certain effect on treating white hair. The mechanism is that regular scalp massage can promote the blood circulation of scalp, make the hair papilla get more blood supply, make the pigment cells in the hair ball full of nutrition, promote the synthesis of melanin particles, and thus make the hair turn from white to black. In addition, Chinese medicine has accumulated a lot of experience in treating white hair, and believes that white hair has a certain relationship with the decline of qi and blood and the weakness of kidney qi. Clinically, drugs that enrich blood, replenish qi and tonify kidney are used to blacken white hair.