Working nights is bad for you

The SOYMB continues to highlight that working shifts is bad for peoples’ health.

Tens of millions of people work shifts. Shift work has been associated with a range of health problems including an increased risk of diabetes, heart disease and stroke.

Sleeping during the day burns fewer calories than at night, according to research that shows working night shifts can increase the risk of developing obesity. A new study has found that night shift patterns disrupt the metabolism of employees, causing them to use less energy than they normally would over the course of a day. The effect was particularly pronounced when the employees were trying sleep during the day as, despite suffering more disturbed sleep, they burned between 12% and 16% fewer calories than when sleeping at night. The findings may help to explain why those who work night shifts are more likely to suffer from obesity and related diseases such as heart disease. Previous research has shown that people working night shifts tend to have poorer diets, with the food available to them during the night tending to be less healthy.

Dr Kenneth Wright, director of the sleep and chronobiology laboratory at the University of Colorado, said lower energy use may accentuate the poor diet and lack of exercise that is often seen in night shift workers. He said this may be due to a mismatch between the body’s internal circadian clock and sleep patterns that disrupts normal metabolism. He said: “Specifically, the 52-59kcal lower total daily energy expenditure on night shifts, if recurrent without a reduction in food intake, would contribute to weight gain. “As little as 50 kcal excess calorie storage per day can increase weight over time and if increased exhaustion and fatigue levels associated with shift work results in reduced physical activity levels, this would promote weight gain.”