Here are the summary points for the introduction section of the current web page context:The document is a scientific article about the role of nutrition in treating clinical depression, which is a major cause of morbidity globally1.The authors argue that unhealthy lifestyle patterns, such as lack of physical activity, junk food consumption, and irregular sleep habits are common in depressed patients, and that daily nutrition can be a modifiable risk factor for reducing depressive symptoms and enhancing treatment results2.The authors use a systematic review and meta-analysis to synthesize and assess the quality of studies that report the correlation between dietary patterns and the symptoms of depression and anxiety in non-clinical and clinical populations.