Showing posts with label winter blues. Show all posts
Showing posts with label winter blues. Show all posts

Friday, January 31, 2014

Depression and Seasonal Affective Disorder (SAD): Symptoms and Treatment


By: Jillian Curry


This winter has already proven to be a harsh one.  With its recent snow storms and frigid temperatures, many people may find themselves feeling tired, unable to concentrate, and depressed.
These feelings may be signs of Seasonal Affective Disorder (SAD) or “the winter blues”, which according to Psych Central, affects as many as 14 million Americans every year.  Its cause is thought to be related to a disruption in the body’s circadian rhythm, or “sleep-wake” cycle.  While the body is asleep, assuming there is darkness, a hormone called melatonin is produced in order to create the drowsiness associated with sleep.  As the winter days grow shorter, the increased amount of darkness confuses the body’s melatonin regulation, leading to feelings of drowsiness, lack of energy, and even depression. 

The key to treating SAD is to help the body recognize and regulate the proper time to produce melatonin.  For some people, this can be done by taking melatonin supplements before bed.  Other people respond better to taking the supplement when waking in the morning.  This signals the brain to stop producing melatonin during the day, by suggesting that the right levels have been reached.
Other forms of treatment for SAD include light therapy, cognitive-behavioral therapy, and antidepressant medications.  With all these options, it is very possible to relieve the symptoms associated with SAD until the spring months arrive again.

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Wednesday, December 4, 2013

What contributes to SAD-ness: A look into Seasonal Affective Disorder


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Walking out of work at 5pm into complete darkness is deflating. Where did the day go? This pitch darkness that swallows up the early evenings this time of the year may have neurobiological effects with clinical implications. Shortening of days and decreased sunlight occur in the September to November period and prolong until March and April. During this span, some individuals react negatively to these changes, feeling some form of depression, hopelessness, or lack of motivation. This effect is labeled Seasonal Affective Disorder (SAD).

Humans need sunlight more than they think. As evidenced by the prevalence of this depressive disorder, being deprived of the sun or natural light can lead to a rise in melatonin levels and a fall in serotonin levels. 

Melatonin is known as the hormone that makes us drowsy and puts us to sleep at the right times according to our circadian rhythms. Our rhythm kicks in when we see darkness towards the end of a long day, but this rhythm is thrown off when this darkness comes a few hours earlier and there is still more left in the day. Melatonin can, therefore, increase more than usual during this time of year because of the increased darkness and shift in our rhythm. This makes us more sleepy and tired during the late afternoon and evenings.

The neurotransmitter serotonin is also linked to this disorder due to its mood stabilizing properties. It is proposed that serotonin decreases with a decrease in natural sunlight, resulting in more fluctuating moods during this time of darkness. Being surrounded by more and more darkness can certainly be a downer, so much so that it can chemically alter one's mood to a point of dysfunction.


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As for who is commonly inflicted, SAD is found to be very prevalent in northern hemispheric territories. To be expected, the shorter days hit the northern hemisphere the hardest come fall. The dwindling sunlight hurts those above the equator with more intense SAD risk factors.

Solutions for treating or preventing this mood disorder are fairly unique. While psychoactive medication, in the form of anti-depressants, may alleviate the biological maladies, light therapy can be used to improve an individual's light exposure. Although it is not natural light, the use of a light box can emit bright rays and expose an individual to a brighter room or atmosphere, effectively addressing his or her troubles with the dominating natural darkness. Also, for less severe cases, a winter time vacation to an appropriate, perhaps tropical, location can provide a much needed break from the harsh seasonal changes. 


-Ryan Scanlon

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