Useful, because these are all things that nourish blood and kidney, and can blacken and moisten hair. And this diet has no side effects on the body, please feel free to eat boldly! Besides, you are only in your forties, and your white hair grows more and more. You either use your head too much and worry too much, or stay up late. Usually pay more attention to rest, keep a happy mood, and don't worry too much about your white hair. You may just see that your white hair is too urgent, your nerves are always tense, your spirit is naturally weak, and your mood is low. . . White hair has grown a lot. . Then there is the cycle, and it is best to keep a happy mood and relax. Doing more exercise is better than eating anything (of course, black sesame and black beans should still be eaten). What foods should white hair eat more? If you want to eat more foods that nourish blood and tonify kidney, you should moisten your hair with black sesame seeds, black beans, black dates and black fungus. Lack of vitamin B is another important factor causing baldness, so the intake of this kind of food should be increased. Foods containing more vitamin B include cereals, beans, dried fruits, liver, heart, kidney, milk, eggs, green leafy vegetables and so on.