The pandemic, social standing, and even family history are all situations that can cause depression. What kind of mental health problem is depression? What are the symptoms and causes of depression? What are the serious consequences of letting the development of depression have on our physical and mental health? We are joined once again by AAMG's Dr. Hans Yu, a senior internal medicine family doctor with nearly 30 years of medical experience, to give a detailed and in-depth explanation and introduce the treatment methods for different types of depression.