DH ignored all the signs too, and my "nagging".  So I just prepared for the inevitable by brushing up on CPR and the early signs of heart attacks, etc., and planned my various actions in advance.  911 or if he insisted on driving somewhere, I'd take him around the corner to the fire station.  Used the plan last february. Refused help, finally let me get him in the car - and since I heard no sirens from the fire station around the corner, took him there.  Yes, dear, it was a heart attack and you stayed in the hospital a week for two surgeries.  He is in denial again and ignoring everything and its driving me crazy from fear.  At least he is not smoking.