1. Eat more foods rich in protein and vitamins A and C.
Such as dairy products, animal liver, cod liver oil, egg yolks, fresh vegetables, fruits, soybeans and their products, peanuts, sunflower seeds, walnuts, mushrooms, etc.
2. Reasonably supplement foods containing trace elements such as zinc, selenium, and chromium.
Foods rich in selenium include: animal liver, eggs, fish, soybeans, mushrooms, asparagus, shepherd's purse, carrots, etc.; Foods rich in zinc include: animal liver and kidneys, dairy products, fish, grains, beans, nuts, etc.; Foods rich in chromium include: beef, black pepper, brown rice, corn, millet, whole wheat flour, brown sugar, grape juice, mushrooms, etc.