Healthcare intervention/innovation and longevity

The association between income and life expectancy is so robust and persistent across countries that it has a name, the Preston Curve, named after the economist who first described it. The strength of the association begs the question: must citizens of poorer countries wait for their economies to grow before they can expect to enjoy the life expectancies of wealthier nations? Or can longevity improve, even in the absence of economic gains? The answer has important implications for human wellbeing around the world.

If medical and public health innovations diffuse to poorer countries, we would expect higher life expectancies at similar levels of economic development. Although Ethiopians or Pakistanis might earn less than Americans did a century ago, they theoretically have access to a far greater array of innovations (many of which were developed for wealthier countries) than Americans did at the same point in their country’s economic development.

https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(19)30345-9/fulltext

@arshimehboob I totally agree with you. Longevity should not be limited to the wealthier nations only. In fact, trials should be done on poorer nations so that their citizens may live long enough to change the paradigm shift in their respective nations.

Thank You @mashizaq for support.
As we know that more developed countries tend to have higher life expectancies, for a multitude of reasons. Africa was the continent that had the lowest life expectancy for both men and women in 2019, while North America had the highest for men and Europe had the highest for females. The life expectancy of men at birth in the United States has slightly increased from 2007 to 2017. Additionally, women in the United States have also faced a slight increase in life expectancy over the same time period.
The less developed countries, indicates that mortality is primarily influenced by such socioeconomic development measures as urbanization, industrialization, and education, and secondarily by such public health measures as access to safe water, physicians, and adequate nutrition.

@arshimehboob The more the reason Africa needs Healthcare intervention/innovation and longevity the most.