Watching TV time course may cause depression. Lack of exercise due to watching TV for a long time can lead to depression and related psychological and physical symptoms of influence. At the same time, more exercise can reduce the risk of depression /.
Researchers at the Harvard School of Public Health retrieved data from 1992 to 2006 of the American Nurses Health Survey. During this period, nearly 50,000 female nurses were surveyed every two years. Respondents reported how long they watched TV every week in 1992 and answered questions about the frequency of walking, cycling, running, and swimming from 1992 to 2000.
At the same time, the researchers investigated the emerging depression / clinical symptoms and the use of antidepressants by nurses through questionnaires. Statistics show that 6,500 of the surveyed persons suffered from depression between 1996 and 2006.
During the analysis, the researchers considered health and lifestyle factors related to depression, such as weight, smoking, and various diseases. The results showed that people who exercised the most (minimum 90 minutes per day) had a 20% lower risk of depression than those who exercised the least (maximum 10 minutes per day). People have a 13% increased risk of depression.
The research report was published by the latest issue of the American Journal of Epidemiology. The lead author of the report, Michelle Lucas, said that regular exercise can reduce the risk of depression, because exercise can improve self-esteem, enhance self-control, and increase the endorphin level of the brain's euphoric hormone.
But Lucas also stressed that the research does not indicate that too much TV watching and lack of exercise are the direct causes of depression.
Gillian Mead of the Royal Hospital in Edinburgh, UK, said in an email to Reuters that previous studies have also shown that physical activity is associated with a low risk of depression. "New research adds evidence that physical activity helps maintain brain health. .
Another study in the United States shows that teenagers watch TV for too long and are more prone to depression in their adulthood. Researchers from institutions such as the University of Pittsburgh and Harvard Medical School followed more than 4,000 adolescents for 7 years and found that 308 depression patients watched TV on average 22 minutes more per day than others. The researchers calculated that the average teenager watched an extra hour of television a day during adolescence, and the likelihood of developing depression increased by about 8% when they grew up.
Suffering from depression may involve multiple causes, not a single cause. The researchers found that some of the respondents may have had symptoms of depression before diagnosis, which caused them to exercise less.
Researchers suggest that depression symptoms should be concerned at the psychological, physical, and social levels. Psychological symptoms refer to persistent depression, feeling sad, hopeless, helpless and inferior; physical symptoms refer to slow movements or language, changes in appetite and weight (usually decreased); social symptoms refer to poor work performance and almost no social activities Avoid contact with friends, etc.
Treatment of depression usually includes medication, talk therapy and self-help.
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