評論
打印
A Coke's not all you need
吃甜食真能提神嗎？
It happens from time to time that after a whole morning of studying, you are tired in the afternoon. It's then that you might want to have something sweet, perhaps a Coke or a chocolate bar to lift your mood. After all, it's believed that a "sugar rush" gives us energy.
在經過一整個上午的學習之后，你下午時常會感到困倦。這時候你或許就想吃點甜食，比方說，一罐可樂或者一塊巧克力來提神。畢竟，很多人都認為吃甜食能夠補充能量。
But a study published in Neuroscience and Biobehavioral Reviews in April suggests that sugar can make us feel worse rather than boost our moods.
但《神經學與生物行為評論》四月刊登的一項研究顯示，糖分并不能提神，而是會讓我們感覺更糟。
The German and UK researchers collected data from 31 studies involving nearly 1,300 adults. They studied the effect of sugar on various aspects of mood, including anger, alertness, depression and tiredness.
來自德國和英國的研究人員從31項研究中收集了近1300名成年人的數據。他們研究了糖分對各方面情緒所帶來的影響，如憤怒、警惕性、抑郁以及疲倦等等。
They found that people who have too much sugar become more tired and less alert within an hour, and that these feelings become more intense over time.
他們發現，攝入過多糖分的人在一小時內會更容易感到疲倦，警惕性也會下降，而這些感覺會隨著時間的流逝變得更加強烈。
According to researchers, when people take in sugar, their blood sugar levels rise rapidly, leading to a burst of energy and a short "feel good" period. However, as they begin to digest the sugar, their blood sugar levels decrease quickly, leading to a bad feeling.
研究者們認為，在攝入糖分后，人們的血糖水平會迅速升高，令人精神大振，暫時“感覺不錯”。但隨著人們開始消耗糖分，血糖水平也會迅速下降，從而產生不適感。
To remain on a "high", people are likely to eat more and more sugar until they become addicted to it. As with caffeine, this prevents the body from relaxing, leaving people feeling tired and less alert.
為了保持“情緒高漲”，人們便很有可能吃更多的甜食，直到上癮。和咖啡因一樣，這會讓我們的身體無法放松，令人感到疲倦并且警惕性下降。
But the study's findings needn't make us think we must give up sweet food altogether. According to the World Health Organization, it is healthy to have the sugars found naturally in fruit, vegetables and milk, so long as they make up less than 5 percent of our daily total energy intake.
但這項研究發現并不意味著我們必須都戒掉甜食。世界衛生組織認為，攝入水果、蔬菜、牛奶中的天然糖分有益健康，只要這些糖分的攝入量不超過每日攝取總能量的5%即可。
So the next time you feel tired and can't concentrate, perhaps you should think twice before you bite into a chocolate bar. Maybe a spot of exercise at midday would be a better idea!
因此，下一次當你感到疲倦，無法集中注意力的時候，或許你得重新考慮下要不要吃巧克力了。中午運動一下或許是個更棒的選擇！
