Humans have assisted each other medically, supported injured and disabled tribe members, and sought out medicinal herbs since long before history was written. I'm not sure how you'd delineate between modern health care and when humans never had some notion of health care and/or support when bodies enter failure modes. We don't survive well without a lot of assistance and care, and living long lives required plenty of bodily maintenance regardless of how fortunate and healthy we were.
I think, if you add clarity, such as how aspirin alone is a wonder, how iodine to clean wounds is a life saver, how soap is a miracle, and all the parasites we don't have, yet all this we take for granted.
We are certainly much healthier, with the little trinkets we keep in our houses.
Willow bark was used like aspirin.
Soap is a old concept (ash is desinfectant as is vinegar ). Alcohol for cleaning wounds is a very old concept alike. As was jumping into clean water every day (also in winter).
