I remember after being on meds for stress for a while the doctors called me in for a heart monitoring session, they seemed almost surprised it was all normal.
People are all so different, there are lots of risk factors but they aren't direct like a light switch and a light bulb.
Measuring the stress directly using cortisol levels would be more useful than seeing if the stress is causing problems elsewhere, but I'm grateful they checked my cardio vascular system.
Anyway, I know when I'm very stressed and when I'm more settled, for me its about trying to avoid peak stress, not always successful as life doesn't work like that.
The cortisol test is saliva samples done through the day, but its only useful as a baseline to see what happens over time to those levels, I don't think there is a direct treatment for stress, just things that can help you live more easily, life changes like being safe.