PRESTON CURVE | Current Affairs | Vision IAS
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    Posted 27 Jul 2024

    1 min read

    PRESTON CURVE

    It was first proposed by American sociologist Samuel H. Preston in 1975.  

    • It highlights that an increase in per capita income of a country does not cause much of a rise in the life expectancy of its population beyond a point
      • When a poor country begins to grow, its per capita income rises and causes increase in life expectancy initially due to nutrition, sanitation and access better healthcare.
      • However, it begins to flatten out after a certain point.
    A graph titled "Preston curve" shows life expectancy on the y-axis and GDP per capita on the x-axis. The curve demonstrates a positive correlation, with life expectancy increasing rapidly at lower GDP levels and flattening out at higher levels.
    • Tags :
    • Per Capita Income
    • Life Expectancy
    • PRESTON CURVE
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