日期：
来源：JiangsuNow收集编辑：
点击蓝字 关注我们
Touch JiangsuNow to follow
Food preferences aren't always something we're born with.
据周三发表在国际著名期刊《细胞代谢》上的一项研究表明，吃高脂肪或含糖的零食会改变我们的大脑活动，让我们对这些食物产生持久的偏好。
A study published Wednesday in the journal Cell Metabolism suggests that eating fatty or sugary snacks alters our brain activity and creates lasting preferences for these items.
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.
The researchers concluded that fatty, sugary snacks activate the brain’s dopamine system, which gives people a feeling of motivation or reward.
Dana Small, director of Yale University School of Medicine’s Modern Diet and Physiology Research Center said diet has such a strong effect on brain activity that dopamine signals can fire even when they pass by a bakery or smell a pastry.
Small said the study is the first to demonstrate in humans that even small dietary changes can rewire brain circuits and increase the long-term risk of overeating or weight gain.
先前在啮齿动物身上进行的实验表明，高脂肪、高糖的食物会重新连接多巴胺神经元，导致暴饮暴食。
Experiments in rodents, meanwhile, have showed that high-fat, high-sugar foods can rewire dopamine neurons and lead to overeating.
华盛顿大学神经科学教授加勒特·斯图伯（Garret Stuber）说，人们更喜欢高脂肪、高糖的食物，甚至可能有生物学上的原因。他说，早期人类可能会寻求高碳水化合物和高脂肪的高能量食物，所以今天的人可能会本能地享有这些偏好。
斯图伯说：“数千年前，这些物质（高碳水化合物和高脂肪的高能量食物）非常稀少，也不那么广泛丰富，但事实上，现在它们在我们吃的几乎所有东西中都无处不在。”
"Thousands of years ago, those things were very sparse and not so widely abundant, but the fact is that they’re everywhere now." Stuber said.
One question left to answer, Small said, is whether people can change their preferences after they've gotten accustomed to a high-fat, high-sugar diet.
A 2012 study showed that after being routinely exposed to soup without added salt, people eventually liked those soups as much as saltier versions. Small said it's possible that such a process could work for fat and sugar, too.
But Stuber said it's hard for people to forget that fatty, sugary foods taste good. When it comes to disliking certain foods, he added, those preferences can last a lifetime.
出 品
版权声明
如需转载本公众号内容（文字、图片、视频）：
1、请注明来源JiangsuNow、作者和二维码。
2、未按此规定转载的，JiangsuNow保留追究其法律责任的权利。