if you’re seeing a cardiologist you’re well beyond the point of basic holistic health troubleshooting. that’s something your regular GP handles, THEN if that doesn't help they refer you to a cardiologist for heart specialized care. it would be a waste of your time and money for a cardiologist to be talking to you about anything outside their speciality. that’s the entire reason your have an appointment with them, to focus on specific issues your GP can’t handle.

If you go see a "holistic" doctor for heart problems instead of a cardiologist you're gonna have a bad time.