I only have about 2 months of experience with this, but I haven't really noticed any difference in my weight loss so far based on what I'm eating if all else is equal. For example: my very worst week nutrition wise was when I travelled for a conference. Though I stayed within my calories, drank my water and worked out 4/5 days I was away, I wasn't able to cook for myself and on two days literally half of my calories came from wine

. Yet when I returned home I was down a full 5 lbs. Bizarre.
I do feel better and more energetic when I eat cleanly, and I'd love to have the discipline to do it all day every day. I don't right now though, at least not yet, and I still rely on some pre-packed convenience items. Overall though, most of my choices are healthy ones and I'm losing weight.