Depression, often referred to as a mental health disorder, is characterized by persistent feelings of sadness, hopelessness, and a lack of interest in activities once enjoyed. It can affect anyone, regardless of age or background, and may lead to physical symptoms such as fatigue, changes in appetite, and difficulty concentrating. The causes of depression can be complex, involving a combination of genetic, biological, environmental, and psychological factors. Treatment options include therapy, medication, and lifestyle changes, which can help individuals manage their symptoms and improve their overall well-being.