I participated in the registry for a few years over a decade ago. Eventually I got disgusted by it. The questionnaire was clearly not designed for people eating low carb and because of the design of the study the low carb data just gets lost in all the low fat follow the guidelines folks. Consequently the results just mirror the conventional “wisdom”. I believe Janet (Jey100) has participated and tried to point out the problems with the study to the people conducting it with no positive changes ever made as far as I know.