Please don't fall into ad hominem attacks. I don't think it helps the conversation here.
I took a look at the study linked and I could see some problems in experiment design. There are so many confounding factors that aren't controlled for.
[edit: An experiment like this would have to be pretty big in scope and try to randomise for control groups accordingly. I personally would like to see that to see what's genuinely resulting in these effects, no matter what it is. You might not believe that though, which is your own bias.]
I took a look at the study linked and I could see some problems in experiment design. There are so many confounding factors that aren't controlled for.
[edit: An experiment like this would have to be pretty big in scope and try to randomise for control groups accordingly. I personally would like to see that to see what's genuinely resulting in these effects, no matter what it is. You might not believe that though, which is your own bias.]