Depressed mood may not require professional treatment, and may be a normal temporary reaction to life events, a symptom of some medical condition, or a side effect of some drugs or medical treatments. A prolonged depressed mood, especially in combination with other symptoms, may lead to a diagnosis of a psychiatric or medical condition which may benefit from treatment. The UK National Institute for Health and Care Excellence (NICE) 2009 guidelines indicate that antidepressants should not be routinely used for the initial treatment of mild depression, because the risk-benefit ratio is poor. Physical activity can have a protective effect against the emergence of depression. Physical activity can also decrease depressive symptoms due to the release of neurotrophic proteins in the brain that can help to rebuild the hippocampus that may be reduced due to depression. Also yoga could be considered an ancillary treatment option for patients with depressive disorders and individuals with elevated levels of depression. Reminiscence of old and fond memories is another alternative form of treatment, especially for the elderly who have lived longer and have more experiences in life. It is a method that causes a person to recollect memories of their own life, leading to a process of self-recognition and identifying familiar stimuli. By maintaining one's personal past and identity, it is a technique that stimulates people to view their lives in a more objective and balanced way, causing them to pay attention to positive information in their life stories, which would successfully reduce depressive mood levels. Self-help books are a growing form of treatment for peoples physiological distress. There may be a possible connection between consumers of unguided self-help books and higher levels of stress and depressive symptoms. Researchers took many factors into consideration to find a difference in consumers and nonconsumers of self-help books. The study recruited 32 people between the ages of 18 and 65; 18 consumers and 14 nonconsumers, in both groups 75% of them were female. Then they broke the consumers into 11 who preferred problem-focused and 7 preferred growth-oriented. Those groups were tested for many things including cortisol levels, depressive symptomatology, and stress reactivity levels. There were no large differences between consumers of self-help books and nonconsumers when it comes to diurnal cortisol level, there was a large difference in depressive symptomatology with consumers having a higher mean score. The growth-oriented group has higher stress reactivity levels than the problem-focused group. However, the problem-focused group shows higher depressive symptomatology. There is limited evidence that continuing antidepressant medication for one year reduces the risk of depression recurrence with no additional harm. Recommendations for psychological treatments or combination treatments in preventing recurrence are not clear. There are empirical evidences of a connection between the type of stress management techniques and the level of daily depressive mood.
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