I Have Had Low Magiusm , Low Potassium And Calcium

I have had low magiusm , low potassium and calcium very serious since I had a knot removed from my thyoid a few months ago. I have always had low potassium and iron levels since my adult years. I also have had ibs/d forever. I also do not have lower teeth due to fact I get sick every time I put them in. do u think any of this is related to the low everything?