Light therapy is one of the first methods of medical intervention that doctors use for people having SAD symptoms. SAD or Seasonal Affective Depression is something that affects a certain portion of the population during l-tryptophan effects. Mostly this is during winter, although there have been cases where people have displayed SAD symptoms even in summer. SAD Information Nobody knows exactly why people get SAD during winter. Yet the fact that people do seem to get depressed in winter is well documented and has been known as the winter blues, or winter depression for generations. Research into SAD information shows that most doctors are of the consensus that sunlight plays a vital role in the incidence of SAD. This is borne out by the fact that it is only in countries that have very little sunlight in winter that SAD is found. Light Therapy Effectiveness For over 20 years now, light therapy has been found to be effective as a SAD medication. Although nowadays people prefer do I need a prescription to take tryptophan to ward off this feeling, light therapy, where the person displaying SAD symptoms are made to sit in front of fluorescent lights for at least half an hour has been found to be the most effective. This is not to say that natural antidepressant pills or SSID medication is not effective. On the contrary SAD information shows that they have been found to be very effective. The only problem is that these medicines do not seem to ...

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