It turns out that people with restless legs, which I’ve had since childhood, experience iron deficiency anemia with much higher blood iron content than the average population.[0]
My primary care didn’t consider this. A pulmonologist had no interest in checking this. An oral sleep doctor had no interest in checking this. I had people suggesting getting an implant to force my tongue to stick out when the issue was low iron.
Definitely get a sleep study (I’d recommend lab over home). I use a sleep tracker (cheap Garmin “smart” watch, but I’ve also tried an Apple Watch) as a reasonable proxy for REM and deep sleep. And if you think a practice is just trying to sell equipment, they probably are. Fortunately I found a good doctor from acquaintances that I would have never otherwise considered (not part of the local medical systems, though did take insurance).
Unfortunately, for many issues it’s not enough to trust the doctor. Do your own due diligence for your health.
0 - https://www.frontiersin.org/journals/neurology/articles/10.3...