what shift in focus particularly in the 20th century accounts for most of the high life expectancy we enjoy today
One significant shift in focus in the 20th century that accounts for the high life expectancy we enjoy today is the emphasis on public health measures and improvements in healthcare systems. This includes advancements in medical technology, the development of vaccines and antibiotics, improved sanitation practices, public health education, and an increased focus on preventative care.
Additionally, there has been a greater understanding of the importance of lifestyle factors, such as diet, exercise, and smoking cessation, in promoting overall health and longevity. The implementation of policies and programs aimed at promoting healthy behaviors and reducing risk factors for chronic diseases has also played a significant role in increasing life expectancy.
Overall, the focus on improving healthcare systems, public health measures, and lifestyle factors has significantly contributed to the dramatic increase in life expectancy over the past century.