Depression: An Intense and Long Term Illness

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Depression is an intense and long-term illness, brought on by stressful situations, that have damaging effects on a person’s emotional, physical and cognitive state on a daily basis. It reduces a person’s ability to function physically and socially. Effects include loss of interest, negative thinking, irritability and fatigue. The effects experienced in each state may sometimes overlap with those from another hence intensifying the degree of depression. Circadian Rhythm, also known as the biological clock, is a biological process that demonstrates an adjustable built-in clock of about 24 hours inside the body (Campbell, Cumming, Gerrig, Wilkes, & Zimbardo, 2008). The rhythms are driven by a Circadian clock. “Circa” mean around and “dia” means day. The circadian rhythm of a person is adjusted to the external cues, such as daylight, in the local environment (Johnson, 2004). This means that the rhythm can be reset by exposure to general stimuli, such as light and heat (ibid.). It enables the body to anticipate and prepare for environmental changes, regulate and coordinate internal metabolic processes (Sharma, 2003). Disruptions in the Circadian Rhythm may cause depression (Carlson, 2013). When it is is disrupted, mood levels are affected (Roth, 2012). Changes that cause a mismatch between your biological clock and environmental clocks affect how you feel and act (Moore-Ede, 1993). The cause of disruption can be due insufficient exposure to light. Insufficient exposure
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