The image shows a document with a title and several paragraphs of text. The document appears to be an abstract from a research paper or report. The text is written in Chinese and includes some technical terms related to medical conditions and their symptoms.

The abstract mentions "cyclical rhythm disturbance" as a common feature of many psychiatric disorders. It states that this primary symptom of cyclical rhythm disorder is characterized by daytime sleepiness and nighttime restlessness. The document also discusses the natural light exposure as an important factor for susceptibility to cyclical rhythm disorder. It highlights that the study targets to conduct cross-sectional analysis of clinical symptoms, daytime sleepiness, physical activity, and mental health in 17,822 participants aged 65 years and older.

The document mentions that daytime light exposure was associated with increased risk of depression and anxiety disorders. It also notes that daytime light exposure was associated with increased risk of cardiovascular disease and diabetes. The document concludes with findings that were used to adjust for sociodemographics