The health production function of the canonical health-capital model is generalized to allow the state of health to affect the total and marginal products of health investment. If the total and marginal products of health investment are nonincreasing functions of the state of health, then the...

Obesity, which has increased in most developed countries in the past few decades, is the result of genetics, environment, and individual choices. Economics is useful for studying the individual choices that lead to obesity, explanations for the recent rise in obesity, the treatment options for...