Does fat cause low back pain?

The article in this link (http://journals.lww.com/spinejournal/blog/SpineBlog/pages/post.aspx?PostID=101) is very interesting in that it sheds more light on why being overweight can lead one to have more spinal pain, not just (or at all) because the spine has 'more to carry', but because fat tissue releases pro-inflammatory compounds.

These compounds mean that for any given strain on a tissue (ligament, muscle, joint etc.) the more likely you are to have pain as a result.

So the less 'fat' you are, the faster you should heal and the less pain you should have - ALL OTHER THINGS BEING EQUAL.