Caffeine Even after a few nights of bad sleep, coffee has no effect

Coffee as a pick-me-up does not work after a few days
Although coffee was long considered harmful to health, but today we know that the popular hot drink of health can even be beneficial. Most people, however, appreciate coffee as a pick-me-up. He is indeed a good remedy for fatigue, but the effect lasts not too long, as researchers now found.

Coffee is not unhealthy
Coffee is healthier than most people believe. It can be good for the heart and also prevent arteriosclerosis. In addition, according to scientific studies, coffee can reduce the risk of colorectal cancer. Most people rely on the popular hot drink but not for health reasons, but rather to keep up with it. In fact, coffee works well against fatigue - but not forever, as US scientists have now discovered.

Coffee is popular with many people especially as a remedy for fatigue. But the awakening effect does not last forever, as researchers now found. (Image: fabiomax / fotolia.com)

A popular pick-me-up
Experts know that coffee is a healthy pick-me-up. Especially with morning muffles runs without coffee initially nothing. In the morning fast two, three cups of hot brew and the day can begin. However, coffee lovers should not rely too much on the effects of caffeine: US researchers led by Tracy Jill Doty of the Walter Reed Army Institute of Research at Silver Spring, Maryland, have found caffeine to be temporary.

Effect of caffeine after a little sleep
In the study, the team of scientists subjected a total of 48 participants to a light sleep deprivation. For a period of five days, they were not allowed to sleep for more than five hours a night. The subjects, who were divided into two groups, had to undergo a series of attention tests. The members of one group received 200 milligrams of caffeine twice a day, equivalent to about two to three cups of filter coffee. The rest received only one placebo.

Timely Stimulant
As the researchers in the journal "American Academy of Sleep Medicine" reported, showed that the coffee drinkers performed better in the tests and felt in principle merrier. But after three nights, the level of performance also fell drastically with them, the caffeine had no effect. Tracy Jill Doty said, "These results are important because caffeine is a widely used stimulant that works against a loss of sleep after too little sleep." According to the authors, data from the study suggest that the effects of the daily caffeine dose Do not stay up for several days with limited sleep. (Ad)