'Pro-ana refers to the promotion of the eating disorder anorexia nervosa.'
Just stop for moment and re-read that sentence. Pro-ana literally means that you are promoting anorexia. Whether you are proudly pro-ana and state so on your blog, or whether you are completely in denial, and will fight to the death to try to prove you’re not, if you post content on your blog which promotes anorexia, you are pro-ana
You can’t argue with that; it’s a fact. If I comment on any of your reblogged pro-ana posts, I literally do not want to hear you whining at me that although your blog might look that way, you’re actually not pro-ana. No. You may tell yourself that to sleep better at night, but once again if you do not want to be labeled as pro ana, then do not post content which promotes anorexia on your blog.