Hyperthyroidism is hyperthyroidism, there is no data to support how long you can live if you find out your hyperthyroidism at the age of 35, and if it is better controlled, it generally does not affect your life expectancy. Hyperthyroidism is mainly due to thyrotoxicosis caused by excessive production of thyroid hormones by the thyroid gland itself, resulting in accelerated metabolic activity, increased excitability of the nervous, circulatory, digestive and other systems and hypermetabolic clinical syndromes, which are often characterized by hyperphagia, lethargy, palpitations, and sweating. If found in time, patients can actively cooperate with the treatment, control the development of the disease, generally will not affect the natural life expectancy. However, there are a small number of patients whose conditions have worsened despite treatment, and various complications may occur and deteriorate, or even hyperthyroidism crisis may occur, affecting life expectancy. In addition, it is recommended that patients with hyperthyroidism go to the hospital in time and follow the doctor’s instructions for treatment to avoid delaying their condition.