Studies like this that haven't undergone peer review are useless until they've been vetted, and even then - it depends on which publication it was submitted to for peer review.
And I didn't read the article closely, but I didn't see mention of a control group.
No mention of a control group, nor any methodologies, nor anything at all except a scream of fear.
I claim a worthless study, conducted for profit, with a foregone conclusion.