Ana - If you are going to make a statement about a study that shows something, please always reference the study. Without doing this, there is no way for people to put weight on the statement.
While this doesn't necessarily apply to you, you would be surprised at the number of posters that will post some bit of information from an unreliable internet source, or a source with an agenda, such as to sell people things, or promote a perspective that is contrary to what peer reviewed papers indicate. We wish to ensure that we are only giving out accurate information.