共用题干第一篇Shift Work Link to Increased Risk

共用题干

第一篇

Shift Work Link to Increased Risk of Heart Problems

Shift workers are slightly more at risk of having a heart attack or stroke than day workers,research suggests.
An analysis of studies involving more than 2 million workers in the British Medical Journal said shift
work can disrupt the body clock and have a negative effect on lifestyle.It has previously been linked to an
increased risk of high blood pressure and diabetes.
Limiting night shifts would help workers cope,experts said.
The team of researchers from Canada and Norway analyzed 34 studies.In total,there were 17,359
coronary events of some kind,including cardiac arrests,6,598 heart attacks and 1,854 strokes caused by
lack of blood to the brain.These events were more common in shift workers than in other people.
The BMJ study calculated that shift work was linked to a 23%increased risk of heart attack,24%
increased risk of coronary event and 5%increased risk of stroke.But they also said shift work was not linked
to increased mortality rates from heart problems and that the relative risks associated with heart problems
were"modest".
Dan Hackam,associate professor at Western University,London, Ontario in Canada,said shift workers
were more prone to sleeping and eating badly."Night shift workers are up all the time and they don’t have
a defined rest period.They are in a state of perpetual nervous system activation which is bad for things like
obesity and cholesterol,"he said.
The authors say that screening programs could help identify and treat risk factors for shift workers,such
as high blood pressure and cholesterol levels.They add that shift workers could also be educated about what
symptoms to look out for,which might indicate early heart problems.
Jane White,research and information services manager at the Institution of Occupational Safety and
Health,said there were complex issues surrounding shift work."It can result in disturbed appetite and
digestion,reliance on sedatives and/or stimulants,as well as social and domestic problems."These can
affect performance,increase the likelihood of errors and accidents at work,and even have a negative effect
on health.She said the effects of shift work needed to be well managed.
"Avoiding permanent night shifts,limiting shifts to a maximum of 12 hours and ensuring workers have a
minimum of two full nights’sleep between day and night shifts are simple,practical solutions that can help
people to cope with shift work."

According to the passage,which of the following statements is NOT true? A:Shift workers are in great danger of having a heart attack than day workers. B:Shift workers with obesity and cholesterol should not work on too many night shifts. C:It’s good for workers if they can limit shifts to a maximum of 1 2 hours. D:Shift work can in some ways change the way people live their normal life.