But being overweight definitely increases your risk of a heart attack or heart failure and even more so if you become diabetic. So it's really urgent to get your weight down and if you have tried everything else it's worth considering bariatric surgery.
1) checking that your blood pressure is normal or low (less than 125/80) and treating it if not
2) taking a statin regularly
3) obviously, not smoking
Oily foods do NOT increase the risk; regular moderate exercise (but not just yoga) does reduce it. You have to remember that it is quite natural to die of coronary disease and if you're over 40, evolution is "not interested in" keeping you alive. So, unnatural drug treatment is worthwhile if you want to live to a ripe old age.
If you have type-2 (non-insulin-dependent) diabetes it is also genetically linked to high blood pressure, which damages the arteries more – so worth checking.
ACE-inhibitor treatment seems to give some protection.