The guangzhou daily published an article in which a doctor claimed that speaking cantonese can cause nasopharyngeal cancer.
Here's the link http://gzdaily.dayoo.com/html/2014-04/19/node_17.htm
A link of a screenshot in case the original is taken down:
https://www.facebook.com/hkcantonese/photos/a.346047257581.151646.46309462581/10152101817297582/?type=1
Here's the link http://gzdaily.dayoo.com/html/2014-04/19/node_17.htm
A link of a screenshot in case the original is taken down:
https://www.facebook.com/hkcantonese/photos/a.346047257581.151646.46309462581/10152101817297582/?type=1