Your wonderment in the last para applies equally to sleep apnea. After you spend a few weeks on apneaboard.com, you realize that sleep apnea can afflict anyone...ANYONE! Fat, thin, young, old, female/male/indeterminate, no matter the ethnicity....and I was myself fit for my age when I was diagnosed and not near being overweight (although I had been retired 12 years and gained about 10 pounds).

And, as to your last statement and the question that follows it: Modern medicine is largely, not entirely, about patient discomfort and anxiety. IOW, how you feel, and also how you convince the practitioner that you feel the way you claim to feel, is what they use so often to assign a level of care or remediation...including the statins and SSRIs that are handed out like jelly beans. A high CAC is like atrial fibrillation, which I have/had. It can be present, but it isn't a great indicator of imminent danger. Any one person selected at random from your CAC score pool and from my 'severe obstructive sleep apnea' pool can expect to live a long time, perhaps a decade or longer. If you want to live it well, with little anxiety and less danger, then use what the medicos offer, albeit with a heavy dose of self-teaching. You should wield just enough relevant knowledge that you're close to being annoying during doctor's visits. Let them know you're taking you seriously. 😀