Fish that are longer lived and predatory tend to have the highest concentration of mercury in their flesh. That’s because as long as they live, they are consuming other fish that contain lower levels of mercury. Over a lifetime, these fish can accumulate mercury levels of 1 million times the concentration in the water they swim in. It is best to avoid or seriously limit your consumption of tuna, swordfish, orange roughy, king mackerel, shark, and tilefish to prevent disruption of your brain’s neurotransmitters.

更长寿的捕食性鱼类通常鱼肉中的汞含量最高。这是因为只要它们活着，它们就会不断摄入其他含汞鱼。这些鱼一生中体内所聚积的汞含量是它们生活的水体的100万倍。为了防止大脑的神经传递素被破坏，最好避免或严格控制金枪鱼、剑鱼、橙连鳍鲑鱼、国王鲭鱼、鲨鱼和方头鱼的摄入。

7. Aspartame 阿斯巴甜代糖

Unfortunately, it is not possible to avoid the harms of too much sugar by replacing it with an artificial sweetener – especially not aspartame. While producers of this sugar substitute swear that it is safe, several studies have linked aspartame to behavioral and cognitive problems. As a chemical stressor, it can cause deleterious effects on the ability to learn and regulate emotions.

不幸的是，用人工甜味剂来代替糖也无法避免对大脑的危害——尤其是阿斯巴甜代糖。尽管这种代糖的生产商宣称它是安全的，但多项研究已经指出阿斯巴甜代糖和多种行为及认知问题之间的联系。作为一种化学刺激物，它会对学习能力和情绪调节能力造成有害影响。

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