"Shift Work Sleep Disorder"

With industrialization, we have gone to a 24-hour society. Not only are there consumers who are awake at all hours, shopping, driving, dining, and recreating; but there are industries oriented towards 24-hour production.

This has led to increasing proportions of our society involved in shift work. About 20% of American workers are engaged in some form of shift work system. Shift workers have higher incidence of health problems, particularly gastrointestinal complaints.

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