KIE: Issues of social justice in access to health care are examined from the standpoint of the "prospective," or "ex ante," Pareto principle, an ethical principle which holds that one policy is to be preferred over another if it betters the prospects of some persons while the alternative betters no one's prospects. It is suggested that this principle may validate a form of utilitarianism in health policy decisions, with equity demanding that everyone have access to a decent minimum of care but not necessarily to all highly expensive treatments.