Vitamin C, which is rich in fruits, is a reducing agent, which will reduce the levels of serum copper and serum copper oxidase and hinder the activity of tyrosinase. Serum copper, serum copper oxidase and tyrosinase are indispensable things in melanin synthesis, which can promote melanin synthesis, while vitamin C will hinder these two substances, which is unfavorable to the treatment of vitiligo. Therefore, patients should eat less or not eat foods rich in vitamin C and vitamin C supplements.

In daily life, we should eat less spicy food such as wine, pepper, raw garlic, mutton, fish and shrimp, and eat less fruits rich in vitamin C such as oranges, oranges, grapefruit, kiwi fruit, tomatoes, hawthorn and bayberry. We should usually eat more foods containing tyrosine and minerals: meat (beef, rabbit meat and lean pork), animal liver and eggs (eggs, duck eggs and quail). Due to the lack of some trace metal elements in blood and leukoplakia, the tyrosinase activity in vitiligo patients decreases, which affects the synthesis and metabolism of melanin, resulting in lesions. Therefore, patients should eat more foods containing copper, zinc, iron and other metal elements to enhance tyrosinase activity and accelerate melanin synthesis.