please, read any article like this with a HUGE grain of salt. Realize that research is published for several reasons. One, of course, is to share the findings. But a more important reason is to see if the results can be duplicated.
If I could see the original paper, I could give you a better explaination of what the authors were saying. Which bothers me that the original paper is NOT linked to in the article. I do realize that many publications are by subscription only, but I have access to a lot of these at work, and I will see if I can find this one.
I'm not arguing for or against the findings - I'm stating that from the linked article, there is too little information to make any type of informed opinion.