What are the benefits of black skin?

Skin color is not directly related to health. Whether the skin is healthy or not can't be decided by black and white. Healthy skin has even complexion, delicate and shiny skin, no fine lines and neutral skin; Skin color has a lot to do with family inheritance (the genes of the human body itself). Skin blackening is mainly caused by the following three reasons: 1, which constantly produces melanin that affects skin color. 2. Ultraviolet radiation will accelerate the formation of melanin. 3. Aging cells accumulate on the skin surface, resulting in spots or uneven skin color. It has little to do with the liver. In addition, there is a passage you can read: with the growth of age, people's skin color tends to gradually deepen and lose its luster. In addition to natural aging factors, there are many other reasons for skin blackening, and the common ones are as follows: 1 Partial eclipse leads to excessive zinc intake. Foods containing trace elements such as copper and iron. Some foods are rich in trace elements, which can directly or indirectly increase the quantity and activity of tyrosine and other substances related to melanin production in human body. These foods mainly include animal liver and kidney, oysters, shrimps, crabs, walnuts, black sesame seeds, raisins and beans. Second, many drugs can also change the normal skin color of the human body. For example, patients who take quinine and other drugs will have black or blue pigment spots on their faces; People who take sedatives for a long time are prone to butterfly spots on their faces and necks, and brown, light blue or lavender will appear on their arms and other places. In addition, repeated use of mercury-containing ointment will also leave brown pigment on the affected area. Third, sunlight and ultraviolet rays will stimulate melanin in the skin, induce skin lesions such as freckles, and cause skin blackening, aging and wrinkles. Especially when the ultraviolet index reaches more than 7, it is easier to hurt the skin. Therefore, in the hot summer, in addition to strengthening the sun protection and maintenance of the skin, we should pay special attention to the humid thin cloud weather, the sunlight coming in through the window, and the fluorescent lamps and computers turned on indoors, which are also the culprits of blackening the skin. In this case, we should strengthen skin care. Fourth, some diseases can also lead to dark skin color. The most common diseases are endocrine system diseases, chronic digestive system diseases and malnutrition. These chronic diseases can make the skin brown or dark brown, which are distributed in exposed parts such as face, back of hand and joints, especially in parts that often bear pressure and friction. Another example is chronic liver disease, which can cause chloasma on the face or blackening around the orbit. There is also a skin disease caused by allergies to certain foods, such as raw onion, raw garlic, pepper, pepper, leek, fish, shrimp, kelp, chicken, duck, pig's trotters, pig's head meat and other foods and wines, which can induce skin allergic reactions, make the skin surface red and swollen, allergic, produce rashes, eczema and measles, and lead to deeper skin pigmentation. I don't think going to the gym is as good as outdoor exercise after all. The air outside contributes to your health. Proper black is a symbol of health. Many people think black is not enough. How lucky you are! Of course, girls want to be clear, but that's not scientific. You must have a balanced diet and exercise, and then your black color will be very attractive.