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欧洲杯竞猜Months of cold and fewer daylight hours can leave anyone feeling less than energetic. But if you regularly suffer from depression in the fall and winter, you may have a type of depression that follows a seasonal pattern. Seasonal affective disorder (SAD) is very real and can profoundly affect your professional and personal life. Here’s what you need to know about this potentially serious condition.

What Causes SAD?
欧洲杯竞猜 Research is ongoing, but scientists believe that SAD is related to various factors and causes, including:

  • Reduced sensitivity to light
  • Problems with a person’s biological clock (circadian rhythm)
  • Decreased levels of serotonin, a brain chemical that affects mood

Do I Have SAD?
SAD can be difficult to diagnose. Many of its symptoms are similar to those of other mental health and emotional issues. Generally, symptoms that recur for at least two consecutive winters, without any other explanation suggest SAD.

If you think you may have SAD, check for these symptoms as the season starts to change:

  • Change in appetite, especially cravings for sweet or starchy foods
  • Weight gain
  • Decreased energy
  • Fatigue
  • Tendency to oversleep
  • Difficulty concentrating
  • Irritability
  • Avoidance of social situations
  • Feelings of anxiety and despair

Am I at Risk For Developing SAD?
Depending on where in the world you live, SAD can affect close to 10% of the general population, and some people are more at risk than others:

  • Age: SAD may affect some children and teenagers, but it tends to begin in people over the age of 18
  • Gender: The condition is more common in women than in men
  • Geography: People who live in northern countries, where winter days are shorter, are also at higher risk

欧洲杯竞猜The good news is there are steps you can take to make things better.

How Can I Deal With SAD?
欧洲杯竞猜 SAD can seriously affect your personal and professional life. If you find yourself thinking about harming yourself or others, seek professional help immediately. There are also a few things you can do for yourself to keep SAD at bay:

  • Spend more time outdoors during daylight hours. For example, walk to the grocery store or shovel the driveway
  • Redesign your interior. Keep the curtains open during the day. Add lamps and rearrange furniture so that you can sit near a window as often as possible. Also, trim tree branches that block light
  • Make outdoor exercise part of your daily life. Walk your dog at the park or stroll around the block on your lunch hour. If you prefer to exercise indoors, position yourself near a window for maximum sunlight exposure
  • Take a winter vacation in a sunny place. This can temporarily relieve SAD symptoms
  • Resist the carbohydrate cravings that come with SAD by sticking to a healthy diet

欧洲杯竞猜You can also speak with your doctor or healthcare provider about:

  • Light therapy: This treatment involves sitting next to a special fluorescent light box for several minutes each day
  • Other treatments, such as counseling, therapy, medication, or lifestyle changes that can help relieve symptoms

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  • American Psychiatric Association. Mood disorder not otherwise specified. In: Diagnostic and Statistical Manual of Mental Disorders.4th ed. Arlington, VA; 2000: 410-427.
  • Thase ME. Major depressive disorder. In: Comprehensive Handbook of Personality and Psychopathology: Adult Psychopathology. Hoboken, NJ: John Wiley & Sons, Inc.; 2006: 207-230.
  • Kurlansik SL and Ibay AD. Seasonal affective disorder. Am Fam Physician. 2012 Dec 1; 86(11): 1037-1041. doi: 10.1155/2012/628434
  • Mondimore FM. Variations of the mood disorders. Depression, the Mood Disease. 3rd ed. Baltimore, MD: The Johns Hopkins University Press; 2006: 127-131.
  • U.S. National Library of Medicine. Seasonal affective disorder. Accessed February 12, 2013.
  • American Psychiatric Association. Let’s talk facts about seasonal-affective disorder. Accessed February 12, 2013.
  • Lurie SJ, Gawinski B, Pierce D, Rousseau SJ. Seasonal affective disorder. Am Fam Physician. 2006 Nov 1; 74 (9): 1521-24. .