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How Is Seasonal Affective Disorder Caused?
People have been observed to behave differently in summers and winters. Most of the people are seen to be quite active, and alert in summers than winters. Many people feel a positive energy on a sunny day, and depressed during rains. This is not just a myth, but also a proven scientific matter, and is a result of the quantity of sunlight a person is exposed to. It is the amount of two substances; melatonin and serotonin in the body, which make us behave differently.
The term Seasonal Affective Disorder (SAD) refers to a type of depression, which is associated with the shortening of days towards the winter season. As the days become shorter, the exposure of body to sunlight is less than the summer months when the days are longer hence, “winter blues” settle in.
Initiating from the fall season, and sticking until the end of the winter season, this disease usually depends on the harshness of the weather. You will see the symptoms more when the weather is intense, and the days become shorter hence, you can never really predict exactly when SAD begins. Apart from winters, the disease can arise during summers sometimes too.