The Double Facetted Nature of Health Investments: Implications for Equilibrium and Stability in a Demand-for-Health Framework

Working Paper: NBER ID: w17789

Authors: Kristian Bolin; Bjorn Lindgren

Abstract: A number of behaviours influence health in a non-monotonic way. Physical activity and alcohol consumption, for instance, may be beneficial to one's health in moderate but detrimental in large quantities. We develop a demand-for-health framework that incorporates the feature of a physiologically optimal level. An individual may still choose a physiologically non-optimal level, because of the trade-off in his or her preferences for health versus other utility-affecting commodities. However, any deviation from the physiologically optimal level will be punished with respect to health. A set of steady-state comparative statics is derived regarding the effects on the demand for health and health-related behaviour, indicating that individuals react differently to exogenous changes, depending on the amount of the health-related behaviour they demand. We also show (a) that a steady-state equilibrium is a saddle-point and (b) that the physiologically optimal level may be a steady-state equilibrium for the individual. Our analysis suggests that general public-health policies may, to some extent, be counterproductive due to the responses induced in part of the population.

Keywords: health investments; demand-for-health; public health policy

JEL Codes: I12


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
physical activity (I12)health outcomes (I14)
alcohol consumption (L66)health outcomes (I14)
deviations from optimal health behavior (I12)adverse health effects (I12)
public health policies (I18)negative health outcomes (I12)
individual preferences for health vs. other commodities (D11)demand for health (I11)
steady-state equilibrium of health-related behaviors (I12)optimal health behavior (I12)

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