 At the same time, whether or how much group differences in aggregated natural measures of health matter morally is not necessarily obvious and may depend on the account of justice under  consideration.[5]  Any sub-group difference in a natural measure of health suggests that it may be possible to secure more health for more people than is currently the case, a goal underscored by the public health’s utilitarian commitments. However, whether any group difference is also unjust from an egalitarian perspective cannot be read off of the existence or even the size of a between-group disparity. Theories of justice, or more directly accounts of injustice, are needed to fill in the gap between observing an inequality in health between groups and deciding whether or how egregiously the inequality constitutes an injustice. (Powers and Faden 2006, pp. 95–99)