Hyposecretion is a medical term that describes a situation in which the body does not produce enough of a certain hormone or other substance that is essential for its normal functioning. An example of hyposecretion would be hypothyroidism, which is a condition in which the thyroid gland does not produce enough of the hormone thyroxine. People with hypothyroidism have difficulty regulating their metabolism and can suffer from a variety of symptoms, including weight gain, fatigue, depression, and difficulty concentrating. Other examples of hyposecretion include diabetes, which is caused by insufficient production of the hormone insulin, and Addison's disease, which is a disorder characterized by insufficient production of the hormones cortisol and aldosterone. Hyposecretion can be caused by a variety of factors, including autoimmune disorders, genetic mutations, certain medications, and certain types of cancer. Treatment of hyposecretion typically involves hormone replacement therapy and, in some cases, lifestyle changes or other forms of medical intervention.