Anemia is important to RLS patients. In Australia being officially anemic is the key to getting an iron infusion easily with support from the Government,
So I have been looking for a definition.
Found this but I have trouble following it. Its long and boring.
ncbi.nlm.nih.gov/pmc/articl...
The title is "The definition of anemia: what is the lower limit of normal of the blood hemoglobin concentration?"
It might be useful to someone.
Interesting note is that the usual definition is based on some outdated work by the World Health Organisation. (WHO)
Like so many things I hear about the gospel according to research decades or a century ago have been enshrined in some standard and doesn't seem to have been reviewed, The profession apparently says that problem is solved so now we can base a whole lot of future work and advice on it.
This is irrelevant but I heard the Body Mass Index (BMI) is one of these things that was devised in about 1850 and human beings have changed a lot since then, even if the original research was acceptable by modern standards.