  Rawls himself never pursued these health-centered issues, but his theory has influenced many writers on moral problems of health and biomedical ethics, including Norman Daniels, Martha Nussbaum, and the team of Madison Powers and Ruth Faden. One of Daniels’ main questions is “How can we meet health needs fairly under reasonable limits to resources committed to the task?” The “fairly” part of this formulation may be justice-based, but the notion of “reasonable limits to resources” is closely tied to the problems of the limits of beneficence mentioned previously. Daniels argues that because health is affected by many social factors, theories of justice should not center entirely on access to health care, but also on the need to reduce health inequalities by improving social conditions that affect the health of societies, such as having clean water, adequate nutrition, and general sanitation.