Health and the Income Inequality Hypothesis: A Doctrine in Search of Data, by Nicholas Eberstadt and Sally Satel, suggests that income distribution is far less powerful a determinant of population health than the inequality hypothesis holds.
In Health Care Matters: Pharmaceuticals, Obesity, and the Quality of Life, Richard D. Miller Jr. and H. E. Frech III argue that policy should no longer be based on the assumption that health-care consumption does not improve health, but rather on a new understanding that such consumption--especially pharmaceutical use--does matter.