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Season Affective Disorder

Weather often affects people's moods. Sunlight breaking through clouds can lift our spirits, while a dull, rainy day may make us feel a little gloomy. While noticeable, these shifts in mood generally do not affect our ability to cope with daily life. Some people, however, are vulnerable to a type of depression that follows a seasonal pattern. For them, the shortening days of late autumn are the beginning of a type of clinical depression that can last until spring. This condition is called "Seasonal Affective Disorder", or SAD.

A mild form of SAD, often referred to as the "winter blues", causes discomfort, but is not incapacitating. However, the term "winter blues" can be misleading; some people have a rarer form of SAD which is summer depression. This condition usually begins in late spring or early summer.

Awareness of this mental condition has existed for more than 150 years, but it was only recognised as a disorder in the early 1980s. Many people with SAD may not be aware that it exists or that help is available.

SAD can be a debilitating condition, preventing sufferers from functioning normally. It may affect their personal and professional lives, and seriously limit their potential. It is important to learn about the symptoms, and to know that there is treatment to help people with SAD live a productive life year-round.

What Causes SAD?

Research into the causes of SAD is ongoing. As yet, there is no confirmed cause. However, SAD is thought to be related to seasonal variations in light A "biological internal clock" in the brain regulates our circadian (daily) rhythms. This biological clock responds to changes in season, partly because of the differences in the length of the day. For many thousands of years, the cycle of human life revolved around the daily cycle of light and dark. We were alert when the sun shone; we slept when our world was in darkness. The relatively recent introduction of electricity has relieved us of the need to be active mostly in the daylight hours. But our biological clocks may still be telling our bodies to sleep as the days shorten. This puts us out of step with our daily schedules, which no longer change according to the seasons. Other research shows that neurotransmitters, chemical messengers in the brain that help regulate sleep, mood, and appetite, may be disturbed in SAD.

What are the Symptoms?

SAD can be difficult to diagnose, since many of the symptoms are similar to those of other types of depression or bipolar disorder. Even physical conditions, such as thyroid problems, can look like depression. Generally, symptoms that recur for at least 2 consecutive winters, without any other explanation for the changes in mood and behaviour, indicate the presence of SAD. They may include:

The symptoms of SAD generally disappear when spring arrives. For some people, this happens suddenly with a short time of heightened activity. For others, the effects of SAD gradually dissipate.

Symptoms of summer depression may include:

Who is at Risk?

Research in Ontario suggests that between 2% and 3% of the general population may have SAD. Another 15% have a less severe experience described as the "winter blues".

SAD may affect some children and teenagers, but it tends to begin in people over the age of 20. The risk of SAD decreases with age. The condition is more common in women than in men.

Recent studies suggest that SAD is more common in northern countries, where the winter day is shorter. Deprivation from natural sources of light is also of particular concern for shift workers and urban dwellers who may experience reduced levels of exposure to daylight in their work environments.

People with SAD find that spending time in a southerly location brings them relief from their symptoms.

How is SAD Treated?

If you feel depressed for long periods during autumn and winter, if your sleep and appetite patterns change dramatically and you find yourself thinking about suicide, you should seek professional help, for example, from your family doctor. There is effective treatment for SAD. Even people with severe symptoms can get rapid relief once they begin treatment.

People with mild symptoms can benefit from spending more time outdoors during the day and by arranging their environments so that they receive maximum sunlight. Trim tree branches that block light, for example, and keep curtains open during the day. Move furniture so that you sit near a window. Installing skylights and adding lamps can also help.

Exercise relieves stress, builds energy and increases your mental and physical well-being. Build physical activity into your lifestyle before SAD symptoms take hold. If you exercise indoors, position yourself near a window. Make a habit of taking a daily noon-hour walk. The activity and increased exposure to natural light can raise your spirits.

A winter vacation in a sunny destination can also temporarily relieve SAD symptoms, although symptoms usually recur after return home. At home, work at resisting the carbohydrate and sleep cravings that come with SAD.

Many people with SAD respond well to exposure to bright, artificial light. "Light therapy", involves sitting beside a special fluorescent light box for several minutes day. A health care professional should be consulted before beginning light therapy.

For people who are more severely affected by SAD, antidepressant medications are safe and effective in relieving symptoms. Counselling and therapy, especially short-term treatments such as cognitive-behavioural therapy, may also be helpful for winter depression.

Increasing your exposure to light, monitoring your diet, sleep patterns and exercise levels are important first steps. For those who are severely affected, devising a treatment plan with a health care professional consisting of light therapy, medication and cognitive-behavioural therapy may also be needed.

Where To Go For More Information

For further information about seasonal affective disorder, contact CMR Canada to find out about support and resources.

Say yes to stress

Stress may not always be the killer it's cracked up to be. Researchers find that deadlines, public speaking and other stressful challenges - when they are met and conquered - trigger the production of immunoglobulins, a type of protein that strengthens the immune system. On the other hand, stress you can't do anything about, diminishes immunoglobulin production and weakens the immune system.

Executivethemes

What the best employers all seem to share is the realization that getting the most out of all their resources means taking better care of employees. John Izzo is familiar with the phenomenon. "Today's workers, many of them survivors of the early 1990s downshifting, have a new confidence," says the Vancouver consultant and co-author of Values Shift: The New Work Ethic & What It Means for Business. "They also have the advantage of a tighter labour market. The result is that employees are more demanding and independent at the same time as they are less willing to sacrifice lifestyle for a paycheque."

Slow Worker Ahead

A young man was a slow worker and found it difficult to hold down a job. After a visit to the employment office, he was offered work at the local zoo.

When he arrived for his first day, the keeper, aware of his reputation, told him to take care of the tortoise section.

Later, the keeper dropped by to see how the young man was doing and found him standing by an empty enclosure with the gate open. "Where are the tortoises?" he asked.

"I can't believe it," said the new employee, "I just opened the door and whooooosh, they were gone!"

Fortunate Johnny

The Sunday School teacher asked, "Now, Johnny, tell me, do you say prayers before eating?"

"No ma'am," he replied, "We don't have to. My mom is a good cook!"

For more information on this and other subjects go to Interventions Archive.  The EFAP assists you and your family resolve personal problems and maintain healthy and productive lives. 

Counselling Services Provided

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