Sunlight and Depression

Many people, especially women, begin to notice feelings of depression as the winter months begin and we have fewer hours of sunlight. This phenomenon is related to a disorder known as Seasonal Affective Disorder, or SAD.

Causes

• It is not known currently why some people suffer from seasonal depression and some do not. There are many theories, including reduction of mood chemicals in the brain, personality traits and reduced sensitivity to light in the retina.

Reverse SAD

• The National Alliance on Mental Health has identified that about one 10th of people with SAD suffer from depression in the summer months when the amount of sunlight is increasing. In these cases, it is actually the increase in temperature and humidity that is responsible for the onset of depression.

Symptoms

• Symptoms of SAD include increased need for sleep, changes in eating patterns, feelings of hopelessness and suicidal thoughts. If these symptoms seem to occur in reaction to the changes of the seasons, then they can be diagnosed as SAD.

Treatment

• Special bulbs that simulate sunlight are used to treat SAD. People with reverse SAD can find relief from their symptoms by vacationing to a cooler climate or trying to keep the temperature down in their home. In addition, people who suffer from both types of SAD may need antidepressants.

Warning

• Just like a person with any type of depression, people with SAD are at a higher risk for committing suicide. If you think you or anyone you know is suffering from SAD, contact a mental health professional for further assistance.