yeah, if i was him, i'd cut back the food and stay skinny. heart doesn't need to work that hard. Making it carry 40 pounds it doesnt need to - after a stroke - is crazy. If you have that many health issues, maybe it's time to just cut back on the gym, use cardio rowing to stay healthy and lean, and just relax and enjoy life.
then again, if lifting weights makes him happy, who am I to shit on that?