The following comment was left a few days ago:
I was doing SLD using flax seed oil for two weeks before my last dental appointment. My pockets that were 4′s and 5″s magically changed to 2′s and 3″s. I had my dentist print both the reports because I was so grateful that they stopped talking about some really painful sounding root work. My brushing and flossing were totally unchanged. I was expecting the result because of what I’ve read on the blog, but nothing this good. I am convinced that taking flax=reduction in gum inflammation, at the very least. [emphasis added]
Take that, “decline effect” (big experimental effects, when the experiment is repeated, get smaller)!
The commenter sent me the records of the two cleanings. At the pre-flaxseed-oil cleaning (April 28, 2011), he had 24 sites (13 teeth) with pockets of depth 4 or 5. At the cleaning after he started flaxseed oil (July 28, 2011), he had no sites with pockets of depth 4 or 5.
You can find many similar reports here.