Is Coffee Good For You?

Even before the recession hit, people were being asked to work longer to help keep costs under control

. When the economy decided to collapse, those who still had jobs were expected to pick up the slack generated by those unlucky enough to be terminated. This has seen people spending more time at work during the conventional day, or working complicated shift patterns. When you add in the commuting times and the need to have some kind of life outside the workplace, sleep has come under pressure. With more people getting less sleep, there have been falls in productivity and increases in the number of accidents. People deprived of sleep make more mistakes and lose their concentration when operating machinery. There are different suggestions for how to deal with these problems. Some believe a short nap improves performance. Others have yet another cup of coffee. A small percentage have been using stimulant drugs to keep themselves going. In its own right, it can be quite dangerous to take stimulants over a longer period of time.

This month sees the publication of another Cochrane meta-analysis. This time, its re-evaluating thirteen studies looking at the behavior of younger people in simulated conditions. The basic methodology is to disrupt their natural sleep patterns and then give them a series of different tasks to perform including simulations of driving and flying. Different groups are then allowed to take a nap, asked to work with different types of lighting in operation, or given a placebo, coffee or other drinks and substances suggested as effective boosts to performance. Overall, coffee has emerged as the most positive intervention. Except there are problems in drawing any firm real-world conclusions. How young people may react is not necessarily any guide to the way older workers might react when going through shift or other changes to sleeping times. More importantly, the methods used mainly tested mental alertness, i.e. how well participants could memorise, calculate and concentrate on different tasks. This is no guide as to what might happen to accident rates if the majority of workers operating machinery suddenly began to drink large amounts of coffee while on the job.

Theres no doubt that feeling sleepy and tired on the job reduces concentration, demotivates and leads to more mistakes being made. Given coffees power to boost alertness, this should be a benefit to the workplace. Except theres ample research evidence of increasingly poor performance among young doctors who are forced to be on call for long periods of time. They do not find drinking coffee reduces their capacity for error. Nor is taking ambien or an equivalent sleeping pill the answer. If people are not getting enough sleep or their natural sleep patterns are being disrupted, taking a sleeping pill may actually make the problem worse. For example, a person who takes either the conventional tablet or ambien cr should be prepared to spend at least eight hours asleep. If only six hours is available, forcing wakefulness while the active chemical ingredients are still active in the bloodstream does not produce an alert person reporting for work. There always comes a point when people must be allowed to catch up on their sleep and restore a natural rhythm.

by: Amanda Patterson

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