According to the newly released “China Hair Loss Population Survey” data, China’s hair loss population is about 250 million, of which the number of men with hair loss is about 130 million and 120 million women, and the rate of increase is at least 15% per year. There is an average of 1 in 4 adults with hair loss, mainly in the 20-40 age group, with the fastest development around the age of 30. Causes of hair loss: The average number of hairs in a person is 120,000, and each hair has a growth period of about 3 years. While some hair grows, others stop growing, and others fall out. The hair growth cycle can be divided into three phases: the growth phase, the decline phase, and the resting phase. Normally about 70-100 hairs are shed naturally every day. Any factors, including genetics, diseases, medications, nutritional metabolism and mental factors can damage the hair follicles and accelerate the hair into the recession and resting phases, leading to hair loss. Common types of hair loss include androgenetic alopecia, baldness, psychogenic alopecia, medication alopecia and scarring alopecia. Prevention and treatment of hair loss: 1. Maintain a regular life, ensure sufficient sleep, and reduce mental stress. Irregular life, lack of sleep, excessive stress can affect the metabolism of hair follicles, accelerating the hair into decline. 2, healthy diet, eat more vegetables and fruits, balanced nutrition. Poor nutrition can lead to yellow hair, easy to break, hair loss, etc. 3, avoid contact with factors that cause hair loss: shampoo, hair products, hairdressing means, specific hairstyles, combing too hard, etc. can cause hair loss, should be avoided. 4, hair loss drug treatment: androgenetic alopecia commonly used drugs are oral finasteride and local application of minoxidil. Local glucocorticoids and immunotherapy are commonly used in alopecia areata. 5.Hair transplantation: The healthy hair follicles are removed through surgical techniques and transplanted to the patient’s balding and hair loss area. After the hair follicle survives, healthy new hair will grow. Warm tip: Hair loss treatment must go to the dermatology and cosmetic surgery departments of regular hospitals, do not blindly use commercially available products for hair loss. Some products not only do not stop hair loss, but also accelerate the process of hair loss, delaying the best treatment time and causing great damage to the scalp.