考研英语水平的进步，不仅要记单词，还需要阅读外语文献等资料。接下来，小编为2024考研者们，整理出——2024考研英语同源外刊:垃圾食品为什么容易吃上瘾?供考生参考。
2024考研英语同源外刊:垃圾食品为什么容易吃上瘾?
A study published recently in the journal Cell Metabolism suggests that eating fatty or sugary snacks alters our brain activity and creates lasting preferences for these less healthy items.
近日发表在《细胞代谢》上的一项研究表明，吃脂肪或糖分的零食会改变我们的大脑活动，并使我们对这些不太健康的食物产生持久的偏好。
For the study, researchers at Yale University and the Max Planck Institute for Metabolism Research in Germany gave one group of participants a high-fat, high-sugar yogurt twice daily for eight weeks, while another got a low-fat, low-sugar version.
在这项研究中，耶鲁大学和德国马克斯·普朗克代谢研究所的研究人员给一组参与者服用了脂糖大的酸奶，每天两次，持续八周;而另一组参与者则服用了低脂低糖酸奶。
Aside from that, both groups continued their normal eating habits. At the end, the groups rated puddings with varying fat concentrations and apple juices with a range of sugar levels.
除此之外，两组人都保持着正常的饮食习惯。实验结束后，两组人分别品尝了不同脂肪浓度的布丁和不同含糖量的苹果汁，并做出评价。
The participants also underwent MRI scans. The scans showed that the treat increased brain activity in the group that had eaten the high-fat, high-sugar yogurt, but not in the other.
参与者还接受了核磁共振扫描。扫描结果显示，食用脂糖大的酸奶那一组参与者的大脑活动有所增加，而另一组参与者则没有。
The researchers concluded that fatty, sugary snacks activate the brain's dopamine system, which gives people a feeling of motivation or reward.
研究人员因此得出结论，脂糖大的零食会激活大脑的多巴胺系统，给人一种收获动力或受到奖励的感觉。
"Let's say a new bakery opens up next to your work and you start stopping in and having a scone every morning. That alone can rewire your basic fundamental dopamine learning circuits."
“比方说，在你工作的地方旁开了一家新的面包店，你开始每天早上去买烤饼。仅这一个小小的饮食习惯会重新连接你的多巴胺学习回路。”
Small said diet has such a strong effect on brain activity that dopamine signals can fire even when someone anticipates eating fatty or sugary food, like when they pass by a bakery or smell a pastry.
斯莫尔说，饮食对大脑活动有如此强烈的影响，以至于多巴胺信号即使在人们预期吃脂或糖大的食物时也会被激发，比如经过面包店或闻到糕点的味道时。
"It just tells us how sensitive we are to the food environment, and how the food environment can actually change our behavior."
“这表明大脑对食物环境有多敏感，以及食物环境是如何改变我们的行为的。”
重难点词汇：
dopamine [ˈdoʊpəmiːn] n. 多巴胺
pastry [ˈpeɪstri] n. 油酥面团;油酥点心
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