Wayne, I'm not qualified but I've been told there are certain symptoms which give clues to what the problem may be, such as reflux etc. If there is any numbness you may want to consult an expert. Here is a site I use to look up certain complaints (good search engine) There is a fair bit of info around lately about magnesium and how it's important for heart muscles.Cheers http://www.naturalnews.com/
