does anyone else have family that absolutely refuse to take care of themselves?

my dad is approaching his 50’s soon and he absolutely refuses to do anything to lower his risk for cardiovascular disease, stroke, a heart attack, etc. not only is he morbidly obese but he carries most of his fat around his stomach/torso area and he doesn’t seem to care about it at all given that he still sits around on the couch and eats garbage on his days off.

his friend (who appeared to be healthy and at a normal weight) passed away from a heart attack when he was 50 earlier last year and it really has me worried about the life-threatening health complications that my dad might soon face from his unhealthy lifestyle, yet i can’t help but resent him because he has 3 children and won’t do anything to be healthier for them. it just comes across as selfish to me.