Thanks, Cherie, that's pretty much the general consensus among my circles. Note though, it's fraught with subjective caution, "tends to" "is believed" "may increase/decrease", etc. No one knows! Damnit!
Sal, yep, that was in part why I quit it. It had been six full years of loyal use and in that six years, I tracked a steady decline. The mystery remains, but my personal conclusion was drawn from the fact that I did not believe it was helping, I suspected it was causing, and to be honest, I was getting ready to take a major road trip where it wasn't invited to join me.
At this junction, I feel it is imperative to say to anyone who may be teetering on decisions regarding their use of DMDs: Please do NOT draw any conclusions from this discussion! We are only an outspoken handful among many, many patients. Stick with your doctors and your own, personal case when choosing your path where DMDs are concerned.