@cantbelievethis, Welcome to Mayo Connect. You will find a lot of information from other people who share your same concerns.
Here is a link that you may find interesting:https://connect.mayoclinic.org/discussion/high-calcium-score/
I'm sure it must have be shocking to find out that you do everything right and still have a high calcium score. There is a lot of information available about this topic, and I hope you take time to learn as much as you can about this. You have to be as educated about your health as you can, so you can advocate for yourself and the treatment you may be advised to try. You can't pick your family, and it sounds like this is where your issue came from...you have nothing to blame yourself for that or be angry at yourself. You sound like a very healthy person, and having a single lab test define you seems unfair. Has your doctor explained what this means to you? Is your cholesterol high, and that's why they want to start a statin? When is your stress-test?