In the story, Cure Winter Blues Light Therapy, by Health Nation, dated November 2011, Dr. Richard Friedman talked about the cause of the seasonal affective disorder and the benefits of the light therapy. In aan interview, Dr. Friedman, who works as psychiatrist inat Cornell Mellon University in New York, said that the cause of the seasonal affective Disorderdisorder (SAD) is due to the lack of melatonin in the body; as a result people tend to sleep more, feel lethargic, and have less sex. People who have the same pattern of depression every season are being affected by this disorder. This sickness is frequentlyfrequent in winter when the days are shorter, so people with SAD consume more calories, and eat less. As a solution, Dr. Friedman recommended the exposure to the light therapy in the morning, for twenty or thirty minutes. Basically, this treatment tells your brain that light is up. Besides, it is cheaper, with lowless side effects than the antidepressant pills. He explains, that normal people, who do not have seasonal affective disorder, produce more melatonin all year. Only a small group of people in Asia suffer from depression in summer. Dr. Friedman mentioned the beach as a evidence to improve seasonal depression. The reasonsreason: the beach is sunny and it is full of negative ions.