These populations already have had sensitization to other toxicants, so wildfire smoke is just another variable on top of that.

这些人群已经对别有毒物质产生了过反应，因此野火烟雾只是此基础上的另一个变量。

And there's also approaches whether species are more susceptible to toxicants.

此外，还有研究方法探讨物种对毒物的。

There's this notion of hormesis where, you know, low doses of a certain stressor, you know, or toxicant, if you will, might actually cause a response in the system that actually leads to an up-leveling of robustness, of vigor, of strength.

有一种叫做适应效应的理论，低剂量的压力源或毒物实际上引发系统的一种反应，这种反应够提升机体的强健度、活力和力量。

Which in the U.S. is the organization tasked with, if there's any kind of risk of exposure of environmental toxicant, they're charged with doing the toxicology studies to see if there's an increased risk.

在美国， 负责处理环境毒物暴露风险的机构是，一旦存在任何暴露于环境毒物的风险，他们就有责任进行毒理学研究， 以评估是否存在风险增加的情况。

But I think it's very likely that the majority of cases, at least with regard to Alzheimer's disease, and likely also even these Parkinsonian conditions, it's becoming increasingly clear that there's an environmental toxicant aspect to them.

但我觉得很有，至少就阿尔茨海默病而言，甚至是这些帕金森氏症的情况，越来越清楚的是， 它们都存在环境毒素的因素。

When fluoride is a known antiseptic, it's a chemical toxicant, it's a thyroid toxicant, it kills your thyroid, and it's a neurological toxin.

当氟化物是一种已知的抗菌剂时，它也是一种化学毒剂， 它是甲状腺毒剂，杀死你的甲状腺， 并且它还是神经毒素。