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A survey by psychologists at the University of Durham, in Britain, suggested that drinking large amounts of coffee can cause a person has a greater tendency to suffer hallucinations.
People who consume more than seven cups of instant coffee a day are three times more likely to hear voices, see things that do not exist or to believe that they are feeling the presence of people have died than those who drink less than the equivalent of a cup according to the researchers.
The leader of the study, Simon Jones, "hallucinations are not necessarily a sign of mental illness (...) Most people have experience of hearing voices briefly when no one is present and about 3% regularly hear these voices." But the scientific work suggested that the risk of this happening increases with the high consumption of coffee and other sources of caffeine.
Cortisol
The researchers attribute the results of his research, done with 200 students, the fact that coffee can lead to increased production of a hormone called cortisol.
Caffeine enhances the physiological effects of stress and, in this state, the body releases cortisol. A higher concentration of the substance in the body can cause a person to hear voices do not exist.
Scientists say they hope the discovery will contribute to a better understanding of the effect of nutrition on hallucinations.
"This is the first step to meet the broader factors associated with hallucinations," said Jones. "Previous research highlighted several important factors such as childhood trauma, which can lead to hallucinations clinically relevant."
"It is believed that several of these factors may be linked to hallucinations in part because of its impact on the body's reaction to stress. Given the link between food and mood, and especially between caffeine and the body's response to stress, it seems reasonable considering which may explain a nutritional perspective, "concluded Jones.
Source: BBC
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This article was translated by an automatic translation system, and was therefore not reviewed by people.