Journal of Medicine and Philosophy 43 (2):132-158 (2018)

Authors
Mark Brown
Middlesex University
Abstract
Moral status ascribes equal obligations and rights to individuals on the basis of membership in a protected group. Substance change is an event that results in the origin or cessation of individuals who may be members of groups with equal moral status. In this paper, two substance changes that affect the moral status of human embryos are identified. The first substance change begins with fertilization and ends with the formation of the blastocyst, a biological individual with moral status comparable to that ascribed to human organs. The second substance change begins at implantation and ends late in embryological development with the formation of the human body, an organism with moral status as a human being. The bioethical implications of each substance change are explored. The Two Substance Change theory is contrasted with continuity theories, which recognize no substance change in embryological development and with fertilization-only substance change theories.
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DOI 10.1093/jmp/jhx035
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References found in this work BETA

Reasons and Persons.Derek Parfit - 1984 - Oxford University Press.
Reasons and Persons.Joseph Margolis - 1986 - Philosophy and Phenomenological Research 47 (2):311-327.
The Ethics of Killing.Jeff Mcmahan - 2005 - Philosophy and Phenomenological Research 71 (2):477-490.

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Human Nature and Moral Status in Bioethics.Matthew Shea - 2018 - Journal of Medicine and Philosophy 43 (2):115-131.
Bioethics After the Death of God.Mark J. Cherry - 2018 - Journal of Medicine and Philosophy 43 (6):615-630.

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