The fact that I am here is 100% due to the medical science of the 1970s. I was born with a hole in my heart. The fact that I lived past 19 is due to the medical science of the late 1990s. That same area of my heart had a short circuit that would sporadically cause 200bpm+ heart rates and cause me to nearly pass out. It’s called Wolf-Parkinson-White syndrome. I had a cardiac ablation which 100% cured me of that. The fact that I am here now is because of modern medicine. I just completed colon cancer treatment for which I lost a foot of colon and had chemotherapy. As I write this I can’t believe that I am not even listing everything that has happened to me and considered myself generally healthy. Anyway medicine in the US is definitely responsible for my still being alive. I’m sure other health care systems would have kept me alive too but it is pure speculation and luck I suppose. I could just as easily have gotten a bad doctor and not been so lucky.