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다니엘 보로타가 이끈 존스홉킨스대학교의 한 연구팀이 카페인이 인식기억에 미치는 영향을 연구한 결과 하루에 200mg에서 300mg의 카페인이 장기기억력을 향상시킨다고 발표했다. 200mg의 카페인은 에스프레소샷 2잔에 해당하며 일반 커피전문점의 아메리카노 한잔에 해당한다.
과학잡지 ‘네이처 신경과학’ (Nature Neuroscience)에 게재된 이 실험은 160명의 18세에서 30세 참가자들이 참여하였으며 이들은 다양한 물건이 그려져 있는 그림을 “야외” 와 “실내”로 구별하도록 했다. 참가자들은 곧 바로 200mg의 알약형태의 카페인이나 위약을 섭취했다.
결과는 카페인알약을 투약한 참가자들의 기억력이 향상이라는 놀라운 발견이었다. 또한, 추가적으로 실행한 실험에서는 적어도 200mg의 카페인이 기억력 향상의 효과를 내며 300mg이상의 카페인은 그 이상의 효과를 발휘하지 못했다고 발표했다.
또한 실험이 시작되기 1시간 전에 섭취된 카페인은 별다른 효과를 보이지 못했다. 메디컬 뉴스 투데이에 게재된 연구결과에 따르면 카페인성분을 함유하고 있는 음료들은 간 질환들의 가능성을 낮추며 또 다른 연구결과는 하루 두 잔에서 네 잔의 커피가 자살충동과 자살가능성을 낮출 수 있다.
(코리아헤럴드 하지원 인턴기자 jiwonha@heraldcorp.com)
결과는 카페인알약을 투약한 참가자들의 기억력이 향상이라는 놀라운 발견이었다. 또한, 추가적으로 실행한 실험에서는 적어도 200mg의 카페인이 기억력 향상의 효과를 내며 300mg이상의 카페인은 그 이상의 효과를 발휘하지 못했다고 발표했다.
또한 실험이 시작되기 1시간 전에 섭취된 카페인은 별다른 효과를 보이지 못했다. 메디컬 뉴스 투데이에 게재된 연구결과에 따르면 카페인성분을 함유하고 있는 음료들은 간 질환들의 가능성을 낮추며 또 다른 연구결과는 하루 두 잔에서 네 잔의 커피가 자살충동과 자살가능성을 낮출 수 있다.
(코리아헤럴드 하지원 인턴기자 jiwonha@heraldcorp.com)
<관련 영문 기사>
Caffeine does not hinder memory but boost it
A study conducted by a research team from Johns Hopkins University in Baltimore showed that 200 mg of caffeine per day can increase long-term memory. The study was published in the journal Nature Neuroscience.
The researchers launched an experiment to find more solid facts about the effects of caffeine as a cognitive enhancer. They analyzed responses to a set of questions from 160 participants aged between 18 and 30 years.
The participants were asked to define pictures of different objects as “indoor” or “outdoor.” Soon after the process, they were randomly given a 200 mg caffeine pill or a placebo at varying times before and after the test. On the following day, the participants were asked to identify the pictures as “new,” “old” or “similar to the original pictures.”
The project’s results were astounding. Those who took the caffeine pill performed better at the experiment, however, those who took a caffeine pill one hour before the experiment showed no improvement in memory performance.
Further experiments conducted by the research team using 100 mg and 300 mg doses of caffeine showed that at least 200 mg were needed to see enhancement in memory. More than 300 mg of caffeine showed stagnated results.
According to a study reported in Medical News Today, caffeinated drinks may decrease the chances of suffering from a liver disease and another study showed that drinking 2 to 4 cups of coffee a day may reduce the risk of suicide.
By Ha Ji-won, Intern reporter (jiwonha@heraldcorp.com)
Caffeine does not hinder memory but boost it
A study conducted by a research team from Johns Hopkins University in Baltimore showed that 200 mg of caffeine per day can increase long-term memory. The study was published in the journal Nature Neuroscience.
The researchers launched an experiment to find more solid facts about the effects of caffeine as a cognitive enhancer. They analyzed responses to a set of questions from 160 participants aged between 18 and 30 years.
The participants were asked to define pictures of different objects as “indoor” or “outdoor.” Soon after the process, they were randomly given a 200 mg caffeine pill or a placebo at varying times before and after the test. On the following day, the participants were asked to identify the pictures as “new,” “old” or “similar to the original pictures.”
The project’s results were astounding. Those who took the caffeine pill performed better at the experiment, however, those who took a caffeine pill one hour before the experiment showed no improvement in memory performance.
Further experiments conducted by the research team using 100 mg and 300 mg doses of caffeine showed that at least 200 mg were needed to see enhancement in memory. More than 300 mg of caffeine showed stagnated results.
According to a study reported in Medical News Today, caffeinated drinks may decrease the chances of suffering from a liver disease and another study showed that drinking 2 to 4 cups of coffee a day may reduce the risk of suicide.
By Ha Ji-won, Intern reporter (jiwonha@heraldcorp.com)
