Osteoporosis should be treated in the endocrinology department. First, let's understand what osteoporosis is. Osteoporosis is a metabolic bone disease characterized by decreased bone mass, destruction of bone microstructure, increased bone fragility, and susceptibility to fractures. Osteoporosis can generally be divided into two types: primary and secondary. Primary osteoporosis is also known as postmenopausal osteoporosis and senile osteoporosis, and postmenopausal osteoporosis is the most common type, directly related to the lack of estrogen. Therefore, osteoporosis is a metabolic bone disease and belongs to metabolic disorders, so it should be treated in the endocrinology department.