Which condition may cause secondary obesity?

Secondary obesity refers to weight gain that is a result of underlying medical conditions or the use of certain medications. Polycystic ovary syndrome (PCOS) is a hormonal disorder common among individuals of reproductive age and is often associated with insulin resistance, which can lead to weight gain and obesity. The hormonal imbalances in PCOS affect metabolism and can result in increased fat storage, making it a notable cause of secondary obesity.

In contrast to primary obesity, where the primary driver is caloric intake versus expenditure, secondary causes like PCOS highlight how endocrine disorders can directly impact weight through metabolic pathways. Thus, understanding the role of conditions like PCOS is crucial in differentiating the various etiologies of obesity.