There is a reference to a study on the topic elsewhere on the thread, and in the article itself, if I'm not mistaken. Also AFAIK it's not required to be a medical doctor to talk about these issues here, and not everyone has a list of publications on every topic they discuss. If you think a view is wrong then answer it, but name-calling and accusations only undermine any such discussion. It's not like the opposer is citing the literature too.