Don't touch the six foods, otherwise the skin will never turn white, which mainly depends on the ability of melanocytes to synthesize melanin. Melanocytes are distributed in the basic cells of human epidermis. Tyrosine contained in melanocytes can oxidize tyrosine into polysaccharides, and then through a series of metabolic processes, melanin can finally be produced. The more melanin is produced, the darker the skin is; On the contrary, the whiter the skin. Why spend countless efforts on whitening skin care, the skin is still not white, and the skin color is still dim? Maybe you should look for the reason from your diet. Some foods, in order to whiten, are absolutely enemies, and it is impossible to prevent them. 1, dark food dark food is also the food you should pay attention to. Light-colored foods such as milk, eggs, tofu and fish are easy to excrete melanin and reduce the burden on internal organs. At the same time, we should also eat less dark food and drink less drinks, such as strong tea, cola, coffee and chocolate. Dark food also includes purple rice, black beans, red beans, green beans, Hong Ling, black sesame seeds, walnuts and other staple foods, and meat such as black-bone chicken, beef and mutton, pork liver, soft-shelled turtle, dark fleshy fish and sea cucumber. In addition, there are carrots, spinach, purple radish heads, purple cabbage, mushrooms, black fungus and so on. 2, fried food fried food is a lot of people's hearts, fried food that smells spicy and delicious is harmful. Fried food is not only easy to get fat after eating, but also contains oxides that will accelerate the skin, so eat as little as possible. If you really can't help it, you might as well add some foods containing vitamin E to fight aging before eating, such as pumpkin, rubber, spinach, carrots, whole wheat bread, peanuts, sesame seeds and brown rice. 3, sensitive vegetables, sensitive food is easy to make the skin black, because they are rich in copper, iron, zinc and other metal elements. These metal elements can directly or indirectly increase the quantity and activity of tyrosinase, tyrosinase and dopamine quinone related to melanin production. Eating more of these foods will make the skin more vulnerable to ultraviolet rays and turn black or long spots, so you should take them in moderation. Sweet potatoes, potatoes, spinach, leeks, celery, parsley, white radish, beans and so on, these vegetables make the skin that loves spots more prone to spots. Generally speaking, vegetables with volatile spicy taste and special smell are mostly photosensitive vegetables. On the blacklist of photosensitive fruits, lemons, papaya, cucumbers, etc. are all photosensitive, and citrus fruits are basically photosensitive. Generally speaking, most fruits with glossy surfaces are photosensitive. After eating these light-sensitive fruits and vegetables, you should avoid sunlight or eat them at night, because fruits like citrus will turn into whitening Qiang Bing if eaten at night! In midsummer, you should eat more fruits and vegetables, such as kiwi fruit, strawberry, tomato, cabbage and cauliflower, which can inhibit pigmentation and make your skin white. When the skin is injured or burned, try to eat less photosensitive fruits and vegetables! 4. The research on foods rich in arginine and rare elements proves that the activity of tyrosinase is closely related to copper, iron, zinc and other elements in the body. Often eat things rich in arginine and rare elements such as zinc, copper and iron, such as animal viscera liver and kidney, crustacean clams, crabs, snails, oysters, aquatic products mullet roe, beans such as soybeans, lentils, mung beans and red beans, and hard-shelled fruits such as peanuts, walnuts, black sesame seeds and raisins. Therefore, people who live by the sea and fishermen who fish have darker skin colors because they eat more aquatic products. 5. The unbalanced balance between alkaline food and acidic food is the best and healthiest state in nature, and so is food intake. Healthy body fluids are weakly alkaline. Usually, the intake of acidic food and alkaline food is unbalanced, and the blood tends to be acidic, which brings various discomforts to the human body and promotes the formation of pigmented spots on the skin. Eating more fresh fruits, edible fungi and other foods, and controlling the intake of strongly acidic foods such as meat, wine and sugar are the keys to keep body fluids in a weak alkaline state and prevent and dilute stains. 6, additives healthy people's internal organs will maintain normal metabolism, so that melanin can be discharged smoothly. Excessive artificial additives in food will cause the burden of internal organs, cause melanin precipitation, and form black spots and freckles. In modern life, many foods have additives, so we should pay attention to whitening. Food additives such as chicken essence, preservatives and artificial pigments will increase the burden on internal organs, which is not conducive to the discharge of melanin, leading to the formation of black spots and freckles. Maybe it's hard for you not to eat these foods you like, but in order to whiten your skin, you should learn to exercise restraint as much as possible.