Hey Beth, my opinion (though I’m not a doctor, cardiologist etc)
In your case, I don’t think there is too much point doing more diagnostics, since you are symptom free and already very proactive with managing risk factors. As you know, your previous CAC can only get worse, so the question is - what use would updating the number give you? If it’s gone up to 550, 600, 800, 1,000 - how would that meaningfully change your current plan? Would you do something different if the number came back as 1,000 rather than 550?
Same for the angiogram, which is invasive and does have some (small) risks. The benefit of that test is that if you actually do have artery stenosis (narrowing), they could potentially stent it. That is primarily done for a patient when they have chest pain during exercise, and the stent opens the artery and provides symptom relief. Whether it reduces risk of heart attacks is still up for debate. But, you did a treadmill test with no ECG changes (thus, no obvious inducible ischaemia), and you go hiking without any chest pain or shortness of breath. So I’d argue that you are symptom-free. And again - it’s not clear how knowing you have a 10%, 40% or 70% occlusion would change your treatment plan.
Your LDL of 38 and ApoB of 42 are really good numbers, and you’re on multiple methods of lowering - each of which has “other” benefits like lowering inflammation. Combined with good diet, not smoking, and exercise, I think you’re doing everything you reasonably could. I assume your blood pressure is well managed?
I recall from a previous post that your Lp(a) is also high (mine too). When those drugs come onto market, of course you’ll want to get on them ASAP.
You could go for even lower ApoB, but I assume that could only come from increasing the doses of the medications, and the potential side effects, which would have to be balanced against ApoB lowering. Do I read it right that you’re not taking any statin? If so, that would be the one remaining option which is still on the table.
IMO Eugene is a very credible person, with a long history of research and top publications in this field. So I would weight his opinion quite strongly. However, I think you need to think about the methods of achieving this, which can only really be done by higher doses of multiple medications - each of which has their own potential side effects.