In daily life, how to prevent hair yellowing and thinning it, the following to introduce: 1, hair in the process of generating melanin, there will be a lack of a copper-containing tyrosine ketone, once the body of copper is lacking, will affect the activity of this enzyme, so that the hair yellowing, thinning. 2, if often engaged in computer, radar and X-ray work friends, will be subjected to long-term radiation and lead to hair yellowing, thinning, usually may wish to eat more anti-radiation food. 3, functional yellow hair is mainly subject to mental trauma, fatigue, seasonal endocrine disorders, drugs and chemicals stimulation, only to lead to the body of melanin and melanocyte production disorders. Therefore, we need to eat more sea fish, black sesame, alfalfa vegetables and so on. 4, the emergence of certain diseases, such as iron deficiency anemia and the first recovery from a serious illness, can make the hair from black to yellow, so in this case, we should eat more black beans, walnuts, fennel and so on. 5, not good nutrition yellow hair is mainly caused by a high degree of malnutrition, should pay attention to the deployment of diet, improve the nutritional status of the body. Usually eat more eggs, lean meat, soybeans, peanuts, walnuts, black sesame and other foods. 6, pay attention to reasonable nutrition, conducive to hair growth and maintain hair color and luster. Often eat food rich in B vitamins and protein, such as eggs, milk, lean pork, beef, chicken, duck, peanuts, soybeans, soy products and fresh vegetables and fruits. People with seborrheic alopecia should especially eat less sugar, animal fat and spicy stimulating food.