Not only is there a growing body of evidence that good nutrition can improve behaviour , there is also a theoretical basis for supposing that a lack of essential nutrients has an impact on the way the brain works 不光是有大量的证据表明良好的营养可以改善一个人的行为举止，而且还有一个理论基础支持这种说法缺少必要的营养对大脑运行方式有影响。
Brain scans with functional mri , an imaging test that measures how much energy the brain is using , reealed that olunteers ' brains worked harder when they ealuated a so - called " weak " brand , and that actiation occurred in areas tied to negatie emotions 通过功能mri进行脑扫描的影像来检测受试者的大脑能量变化，研究人员发现人们评价非名牌的大脑反应多，负面情绪的脑区活跃。
