Scientists and mental health professionals have made major strides in understanding and treating major depression, including the discovery of the role played by imbalances in brain chemicals such as serotonin and noradrenaline. But there is increasing evidence that there is more to the story: depression also involves structural changes in areas of the brain that are involved in mood, memory, and decision-making.
科学家和精神健康专业人士在主导型抑郁症的理解和治疗方面已取得重大的进展，包括发现了血清素和去甲肾上腺素等脑化学物的不平衡所起的作用。但是，越来越多的证据显示，事情并不仅仅如此：抑郁症还涉及到大脑分管情绪、记忆和做决定的区域发生的结构性变化。