At the age of 35, gray hair is a very common clinical phenomenon, because the human body into a certain age may appear certain metabolic disorders of melanocytes, this situation is generally possible after the age of 35, but also need to pay attention to whether there are abnormal disease factors caused, it is recommended to seek medical attention in a timely manner, clear cause for treatment. I, non-disease factors: 1, physiological factors: some people to 35 years old, the body inside the melanocyte activity is reduced, resulting in hair open white; 2, genetic factors: part of the people because of family genetic reasons, young will begin to appear white hair. Second, disease factors: vitiligo, nutritional deficiencies, follicular melanin metabolism disorders, pituitary function decline, hyperthyroidism, chronic infectious diseases, local lesions inflammation and other diseases, as well as when people are in a long-term anxiety, tension, depression and other bad psychological state and mental state, will appear white hair. It is important to seek medical treatment after discovery, and patients should adjust their mindset and relax their brains to ease the situation.