Marginal productivity (gain in average life expectancy) of an additional dollar spent on medical care is much higher today than it was a century ago.

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The marginal productivity of an additional dollar spent on medical care is generally considered to be lower today than it was a century ago because the most significant and cost-effective health improvements (such as vaccinations, antibiotics, and basic public health measures) were made in the past, and current spending often targets more complex, less universally effective treatments.

Marginal Productivity (Gain in Average Life Expectancy) of an Additional