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【medical-news】每日7杯咖啡会使人产生幻觉
By Naomi Kresge
Jan. 14 (Bloomberg) -- Consuming the caffeine in seven cups of instant coffee a day may leave you more likely to see, hear and smell things that aren’t there, U.K. researchers said.
People who drink at least 330 milligrams of the stimulant a day were three times as likely to have hallucinations as those who consumed less than 10 milligrams a day, Durham University researchers found in a study of 219 college students published today in Personality and Individual Differences.
The study, the first to link caffeine and hallucinations, explored the relationship between high caffeine consumption and an increased release of cortisol, a stress hormone believed to contribute to delusions, lead researcher Simon Jones said. It forms the first step toward examining nutrition as a factor in the occurrence of hallucinations, he said.
“Given the link between food and mood, and particularly between caffeine and the body’s response to stress, it seems sensible to examine what a nutritional perspective might add,” Jones said in a statement.
It may also be that people under stress and more susceptible to hallucinations are also more likely to consume high levels of caffeine, Jones said in an interview. Caffeine is also contained in tea, chocolate, energy drinks, and some foods.
“There would be no real reason for me to stop drinking tea,” said Jones. “I don’t see a reason to change a moderate intake.”
Starbucks
The amount of caffeine linked to hallucinations in the study would also be equivalent to about seven 8-ounce cups of brewed black tea or about 3 1/2 8-ounce cups of brewed black coffee, according to the Mayo Clinic Web site. One 16-ounce Starbucks Corp. drip coffee also has 330 milligrams of caffeine, according to the Starbucks Web site.
Starbucks spokeswoman Tara Darrow declined to comment in an email, saying the Seattle-based company was aware of the research but hadn’t been able to review how it was conducted.
The U.K. researchers used surveys to assess daily caffeine intake and past experience with hallucinations. Cigarette smokers, known to be more sensitive to caffeine, weren’t allowed to participate, and volunteers’ stress levels and proneness to hallucinatory experiences were taken into account.
Nine of the 22 people in the highest-caffeine group reported hearing disembodied voices, compared with three of the 22 people in the lowest-caffeine group, Jones said. Participants also reported seeing things that weren’t there and sensing the presence of dead people.
http://www.bloomberg.com/apps/news?pid=20601124&sid=a9S5gzERwwQE&refer=science 本人已认领该文编译，48小时后若未提交译文，请其他战友自由认领。 Seven Cups of Coffee a Day May Lead to Hallucinations
每天喝7杯咖啡可能导致幻觉
By Naomi Kresge
Jan. 14 (Bloomberg) -- Consuming the caffeine in seven cups of instant coffee a day may leave you more likely to see, hear and smell things that aren’t there, U.K. researchers said.
英国研究人员称：每天喝7杯速溶咖啡可能会使你看到，听到，闻到实际上不存在的东西。
People who drink at least 330 milligrams of the stimulant a day were three times as likely to have hallucinations as those who consumed less than 10 milligrams a day, Durham University researchers found in a study of 219 college students published today in Personality and Individual Differences.
Durham大学研究人员通过调查219名在校大学生发现，每天摄入至少330mg兴奋物质的人产生幻觉的几率是每天摄入低于10mg兴奋物质的人的三倍，这一研究发表在今天的Persionality and Individual Differences杂志上。
The study, the first to link caffeine and hallucinations, explored the relationship between high caffeine consumption and an increased release of cortisol, a stress hormone believed to contribute to delusions, lead researcher Simon Jones said. It forms the first step toward examining nutrition as a factor in the occurrence of hallucinations, he said.
这一研究首次将咖啡因和幻觉联系在一起，探讨了高咖啡因摄入量与皮质醇释放量增加的关系，皮质醇是一个压力相关激素，并被认为会促进幻想的发生，带头研究员Simon Jones说，这一研究向将营养物质作为产生幻觉因素来检测迈出了第一步。
“Given the link between food and mood, and particularly between caffeine and the body’s response to stress, it seems sensible to examine what a nutritional perspective might add,” Jones said in a statement.
如果有了食物和情绪之间的关系，特别是咖啡因和身体对压力的反应之间的关系，那么决定营养性成分的比例就是一件很明晰的事了。
It may also be that people under stress and more susceptible to hallucinations are also more likely to consume high levels of caffeine, Jones said in an interview. Caffeine is also contained in tea, chocolate, energy drinks, and some foods.
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作者:admin@医学,生命科学 2011-04-07 17:16
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