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Part of this video was sponsored by LastPass. Stick around to the end for a word from our sponsor. Are negative ions good for you? Normally I'd dismiss such a question out of hand. In fact that's exactly what I did when a friend brought it up about a month ago. But he was insistent he said no this is for real there's science behind it. And so I looked into it and I found this. There are literally hundreds of published peer-reviewed scientific studies on the biological effects of ions. It's a body of research that begins about a century ago and continues to the present day. And this is just a fraction of it. Now these studies aren't just about any old ions they're about atmospheric ions or air ions. And although the results are not uniform, they all begin with the premise that positive ions make us feel bad and negative ions make us feel good. So in this video I want to get to the bottom