Hey, Tink:
There are "major nuances" like NSD is wary of spices while LSD does not limit these or dairy.
Carol Sinclair wanted to entitle her book "The IBS Starch-Free Diet," but Ebringer would not have written the preface because he said that there is some starch in everything! We wanted to keep the distinctions and terminology simple, so although her book is "Low" the regimen within is as close to "No" as anyone can achieve without actually fasting.
Hence the designations.
Understand, Ebringer used his "London AS Diet" universally and with people who were not keen on such a radical change and they nearly always needed drugs in addition to small dietary changes. Regret that sulfasalazine is not so practical for up to 50% of patients, long-term, so many LSDers also relied upon NSAIDs in the day and doing so it was very easy to fall off the wagon, since these dull the reaction to food and certainly some few of his patients grew not as convinced about diet when not in the presence of the force of his personality.
I had to question whether giving up "some" starches was at all useful. I believed that AS might be a step-function kind of thing--that is not a linear relationship between stimulus (starches) and response (disease activity and flares). He stated, that overall he believes there is a rather linear relationship, so that giving up some starches is better than nothing. But I still look at his ESR chart (from the "Cross-Tolerance Hypothesis" paper) and find very high numbers even after 9 months on his regimen. I mean almost all of these people trended down, but some must have still been in severe pain after 9 months and would probably not be out of pain until another year or more!
I'm just not that patient and had to PROVE Ebringer's work to myself quickly, so after a couple of months strict with spotty results, I began taking antibiotics and I have been done with AS (albeit not the damage it left me with) for more than ten years now.
Sorry if off-topic a bit, but the point is Ebringer's LSD is for the majority of people to adjust their diets long-term--not for crazy people like me who fast 20 days just to get well again.
HEALTH,
John