Late at night, as most of us sleep, there are millions of people working to keep us safe, provide medical care and create new products as we dream. These people are shift workers, and they fight a constant battle with their circadian rhythm. Because these rhythms are very much controlled by light and dark, shift workers are constantly going against what their body naturally wants to do. The result is a condition called shift work disorder, which can cause excessive sleepiness, fatigue, changes in endocrine function, cardiovascular disorders, depression and weight gain. When treating shift work disorder, consider using bright light therapy before medications. Bright light improves wakefulness, attention and concentration. Recommending bright light therapy in the early part of a night shift will help promote sleep after patients complete their shift.

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