What is the most significant reason for the dramatic increase in expected life span over the last 100 years?

Question

Quizplus · Accepted Answer

The development of antibiotics and immunizations has significantly reduced mortality rates from infectious diseases such as tuberculosis and influenza, which were major causes of death in the past. This has led to a dramatic increase in life expectancy over the last century. While better living habits and improved surgical techniques may have contributed to better health outcomes, they have not had as significant an impact as antibiotics and immunizations. Decreasing poverty may also have an impact on health, but it is not the most significant reason for the increase in life expectancy.

What Is the Most Significant Reason for the Dramatic Increase