User blog:Kazekage21/Logia Issue

"Logia (自然系（ロギア） Shizenkei [Rogia]?, literally translated as "Nature System") is one of the three types of Devil Fruit. It is characterized by giving its user the ability to turn into a natural element or force of nature. Logia Devil Fruits are considered the most powerful as well as the rarest of the types of Devil Fruit as a whole."

I want to know where do we draw the line about logias? I was told that my tear fruit wasn't a logia, wouldn't it be because the human body is a force of nature and would this count?