Hi!
I think my Grandma has this, & I suspected magnesium deficiency too, as she also has mitral valve problems & occasional anxiety..
She also has (severe) constipation & takes pills for going to the loo.. so reading the stuff about magnesium in connection to diuretics & potassium really rang a bell..

We haven't tried supplementing her on anything yet.. (but she's partial to sweets & chocolate & an occasional coffee..)
Would it make sense to supplement even if she persists with occasional sweets & (not always, but often) a cup of coffee a day?
I'm guessing 'better than nothing' though not ideal..?

(or maybe I need to do a search or start another thread? :))
Just saying - good thread & thanks for the info!!