Adolescent boys and girls are at high risk for acne, and as the standard of living improves, we find that the incidence of acne is also increasing from eight or nine year olds to adults in their forties. What should we pay attention to in our daily lives to reduce the occurrence or extent of acne? First of all, we should understand the causes of the disease. During puberty, the secretion of sex hormones in the body increases, and too many androgens are produced, which will lead to abnormal sebaceous gland function and produce a lot of sebum. On the other hand, androgens can promote hyperkeratosis of the epithelium at the mouth of the hair follicle, causing the mouth of the follicle to be blocked by keratin and sebum to be unable to be discharged, resulting in accumulation in the sebaceous glands. The abnormal composition of sebum in acne patients may be another factor contributing to the development of the disease. In addition, the proliferation of Propionibacterium acnes parasites in the sebaceous gland follicles; which proliferate under anaerobic conditions, break down sebum and produce an irritating substance called free fatty acid. It can spill out through the tiny fissures of the sebaceous follicles, causing inflammation of the surrounding skin tissue. Diet is crucial to the development of this disease. People who favor meat and fish, sweets, fried foods, spicy flavors, tobacco, alcohol, and powerful condiments are prone to acne. Therefore, once acne occurs, it is necessary to adjust the structure of your daily diet to a lighter one, with more fresh vegetables, fruits, soy milk, fish and other foods, and to consume sufficient amounts of protein, vitamins, inorganic substances, and crude fiber. It is advisable to eat foods rich in vitamin A and B: vitamin A is beneficial to the proliferation of epithelial cells, prevents follicle keratinization, eliminates acne, regulates the function of skin sweat glands, and reduces the erosion of epidermis by acidic metabolites. Foods rich in vitamin A include: carrots, animal liver, etc. Vitamin B2 promotes the process of biological oxidation in cells and participates in the metabolism of sugar, protein and fat. Vitamin B6 is involved in the metabolism of unsaturated fatty acids. Zinc-rich foods also have the effect of controlling sebaceous gland secretion and reducing cell shedding and keratinization. Avoid eating fishy foods that often cause allergies and aggravate acne, making the chronic inflammation of the sebaceous glands expand and difficult to cure. Wine, strong tea, coffee, chili peppers, garlic, leeks, fatty meat, egg yolk, sesame seeds, peanuts, and various kinds of sugar and sugar-rich pastries are best eaten sparingly. In addition, it should be emphasized that many patients use their hands to squeeze the local skin, so that the barrier protection function of the skin is reduced, and bacteria take advantage of the situation and secondary inflammation of the sebaceous glands, so that the inflammation continues to aggravate until the formation of purulent sebaceous inflammation, and tissue repair and destruction coexist in the sebaceous camp cavity, easily leading to the formation of scars, scarring, and atrophic scars. If the condition cannot be controlled by strict dietary control, you should go to a hospital and take medications such as vitamin A or antibiotics as recommended by the doctor.