"Shift Work and Ill-Health"

Studies compiled by the Circadian Learning Centre in the United States have shown that shift workers, especially those who work nights, can suffer from a number of health problems.

They include sleep disorders, fatigue, heart disease, high blood pressure and gastrointestinal upsets. Shift work can speed the onset of ulcers.

In one study of Italian workers, the time between the start of work and diagnosis of an ulcer was 12 years for day workers, 5.6 years for permanent night workers and 5 years for workers on a rotating eight-hour schedule.

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