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Fall in Mood, Energy Level During Winter is a Sign of Seasonal Affective Disorder
According to Loyola University Health System doctors, people undergoing SAD notice their frame of mind, energy level and enthusiasm plummeting each November only to return to normal in April.
This condition, characterized by depression, exhaustion and lack of interest in people and regular activities, interferes with a persons outlook on life and ability to function properly, said Dr. Angelos Halaris, chair of Loyolas department of psychiatry and behavioral neurosciences.
He says that the most common type of this mood disorder occurs during the winter months.
SAD is thought to be related to a chemical imbalance in the brain, brought on by lack of light due to winters shorter days and typically overcast skies, he adds.
Halaris said that the bright light affects brain chemistry in a helpful way and acts as an antidepressant.
With less exposure to light in the winter months, many people become depressed. Those susceptible to SAD are affected even more so, he said.
Halaris noted that a common tendency with SAD is a craving for sweets. In addition, the condition also has a negative effect on social relationships.
However, Halaris adds that people should not lose hope, as SAD is treatable. He advised people get out of their homes during winter for at least one hour each day.
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