Low sodium diets can induce magnesium deficiency by causing the body to pull magnesium from bone and excrete it in urine.

“sure what what ends up happening is in order for the body to maintain normal sodium levels and a low salt diet it'll start pulling sodium from the bone but it also pulls magnesium and calcium at the same time sure and that will spike magnesium blood levels and it tricks the body into thinking you're overloaded in magnesium when you're not getting enough salt I'll start kicking magnesium out in the urine and same thing happens when you go on a low salt diet aldosterone levels go off and our own also kicks magnesium out so low salt diet scan absolutely lead to magnesium deficiency”