Biological studies have demonstrated that it is possible to slow the ageing process and extend lifespan in a wide variety of organisms, perhaps including humans. Making use of the findings of these studies, this article examines two problems concerning the effect of life extension on population size and welfare. The first—the problem of overpopulation—is that as a result of life extension too many people will co-exist at the same time, resulting in decreases in average welfare. The second—the problem of underpopulation—is (...) that life extension will result in too few people existing across time, resulting in decreases in total welfare. I argue that overpopulation is highly unlikely to result from technologies that slow ageing. Moreover, I claim that the problem of underpopulation relies on claims about life extension that are false in the case of life extension by slowed ageing. The upshot of these arguments is that the population problems discussed provide scant reason to oppose life extension by slowed ageing. (shrink)

Applied ethics is home to numerous productive subfields such as procreative ethics, intergenerational ethics and environmental ethics. By contrast, there is far less ethical work on ageing, and there is no boundary work that attempts to set the scope for ‘ageing ethics’ or the ‘ethics of ageing’. Yet ageing is a fundamental aspect of life; arguably even more fundamental and ubiquitous than procreation. To remedy this situation, I examine conceptions of what the ethics of ageing might mean and argue that (...) these conceptions fail to capture the requirements of the desired subfield. The key reasons for this are, first, that they view ageing as something that happens only when one is old, thereby ignoring the fact that ageing is a process to which we are all subject, and second that the ageing person is treated as an object in ethical discourse rather than as its subject. In response to these shortcomings I put forward a better conception, one which places the ageing person at the centre of ethical analysis, has relevance not just for the elderly and provides a rich yet workable scope. While clarifying and justifying the conceptual boundaries of the subfield, the proposed scope pleasingly broadens the ethics of ageing beyond common negative associations with ageing. (shrink)

Chemical brain preservation allows the brain to be preserved for millennia. In the coming decades; the information in a chemically preserved brain may be able to be decoded and emulated in a computer. I first examine the history of brain preservation and recent advances that indicate this may soon be a real possibility. I then argue that chemical brain preservation should be viewed as a life-saving medical procedure. Any technology that significantly extends the human life span faces many potential criticisms. (...) However; standard medical ethics entails that individuals should have the autonomy to choose chemical brain preservation. Only if the harm to society caused by brain preservation and future emulation greatly outweighed any potential benefit would it be ethically acceptable to refuse individuals this medical intervention. Since no such harm exists; it is ethical for individuals to choose chemical brain preservation. (shrink)

This entry begins by indicating respects in which the concept of life’s meaning has only recently become salient in English-speaking bioethical discussions and by clarifying what talk of ‘life’s meaning’ and cognate phrases mean, at least to most of the philosophers and bioethicists who have used them. This essay then addresses six major respects in which thought about what makes a life meaningful has influenced bioethics. The first four issues concern life and death matters for human beings, and specifically involve: (...) euthanasia and physician-assisted suicide, reproductive ethics, life extension, and transhumanism. The other two topics are about respects in meaningfulness figures into somewhat ‘less vital’ medical contexts, concerning ways in which promoting health is conceived either as a way to advance meaning or as in competition with the latter value. This essay concludes by offering a brief bird’s-eye reflection on the state of the field. (shrink)

Many researchers are working toward the goal of finding a treatment that halts or even reverses the aging process of the human body, a treatment that would make the recipient potentially immortal. The hope that they will succeed in the relatively near future is gaining ground among academics and laypeople alike. What will happen if this hope becomes reality? Specifically, how will our political and social institutions and practices be affected by that discovery? These are the questions raised in the (...) present paper. Concretely, I will discuss three political and social problems that the invention of an immortality treatment is likely to provoke, namely the struggle for access to that treatment, the threat of overpopulation, and the friction between potentially immortal individuals. (shrink)

After describing the disorder of psychopathy, I examine the theories and the evidence concerning the psychopaths’ deficient moral capacities. I first examine whether or not psychopaths can pass tests of moral knowledge. Most of the evidence suggests that they can. If there is a lack of moral understanding, then it has to be due to an incapacity that affects not their declarative knowledge of moral norms, but their deeper understanding of them. I then examine two suggestions: it is their deficient (...) practical reason or their stunted emotions that are at fault. The evidence supports both explanations. I conclude with an overview of the debate concerning whether they are morally or legally responsible for their actions. (shrink)

Two clusters of essays in this issue of The Journal of Medicine and Philosophy provide a critical gaze through which to explore central moral, phenomenological, ontological, and political concerns regarding human moral agency and personal responsibility. The first cluster challenges common assumptions in bioethics regarding the voluntariness of human actions. The second set turns the debate towards morally responsible choice within the requirements of distributive justice. The force of their collective analysis leaves us with a well-founded basis critically to approach (...) any account of bioethics or health policy that is insufficiently attentive to the central challenges of human freedom and responsible free choice. (shrink)

One of the strongest objections to the development and use of substantially life-extending interventions is that they would exacerbate existing unjust disparities of healthy lifespans between rich and poor members of society. In both popular opinion and ethical theory, this consequence is sometimes thought to justify a ban on life-prolonging technologies. However, the practical and ethical drawbacks of banning receive little attention, and the viability of alternative policies is seldom considered. Moreover, where ethicists do propose alternatives, there is scant effort (...) to consider their merits in light of developing world priorities. In response to these shortcomings, I distinguish four policy options and, on the basis of a plausible intuition about fairness, evaluate their implications for a fair distribution of healthy lifespans. I claim that even in developing nations it would be fairest to favor policies that promote equal access to at least one promising category of substantially life-extending intervention: calorie restriction mimetics. (shrink)

Abstract Objections to life extension often focus on its effects for individual well-being. Prominent amongst these concerns is the possibility that life extending technologies will extend lifespan without preventing the ageing of the mind. Writers on the subject express the fear that life extending drugs will keep us physically youthful whilst our minds decay, succumbing to dementia, boredom, and loneliness. Generally these fears remain speculative, in part due to the absence of genuine life extending technologies. In this paper, however, I (...) examine the implications of an existing life extension technology. Caloric restriction (CR) and drugs that mimic its effects, such as rapamycin, metformin and resveratrol have been shown to increase average and maximum lifespan in a wide variety of organisms, and seem likely to do so in humans. Moreover, some CR mimetic drugs (CRMs) are already widely used. This means that they present a pressing test case for fears about mental ageing in an extended life. Misgivings about mental ageing can be divided into biomedical factors such as the likelihood of brain ageing, and psychological factors such as loss of meaning and boredom. I argue that studies of CR suggest that brain ageing will be beneficially slowed. However, it is less clear that deleterious aspects of psychological ageing can be similarly retarded. I argue that this reduces the desirability of life extension unless major social changes can be made. (shrink)

El movimiento transhumanista tiene, entre sus propuestas principales, el proyecto de alargar la vida para poder alcanzar la inmortalidad en una vida indefinida o en una forma cibernética de existencia. En este artículo se presenta la propuesta del transhumanismo y se reflexiona sobre el deseo de ser inmortales y sobre las implicaciones antropológicas de la muerte. La crítica se hace desde la consideración de aspectos fundamentales del ser humano, como la finitud, la historicidad y la vulnerabilidad. Además, el proyecto transhumanista (...) de vencer la muerte supone una propuesta de salvación, que coincide en su formulación con la misma que hace el cristianismo. Ambos pretenden una victoria sobre la muerte. La crítica teológica se centra en la comprensión de la muerte y en la reflexión sobre los medios para vencerla. En este artículo la crítica al proyecto transhumanista se dirige, más que a lo que propone, a lo que queda sin plantear, provocando una reducción en la comprensión de la muerte y en la forma de vencerla. (shrink)

Debates about the ethical and social implications of research that aims to extend human longevity by intervening in the ageing process have paid little attention to the attitudes of members of the general public. In the absence of empirical evidence, conflicting assumptions have been made about likely public attitudes towards life-extension. In light of recent calls for greater public involvement in such discussions, this target article presents findings from focus groups and individual interviews which investigated whether members of the general (...) public identify ethical issues surrounding life-extension, and if so, what these ethical issues are? In this study, while some participants were concerned primarily with the likely personal consequences of life-extension, for others the question of whether or not to pursue interventions to extend longevity, and how they should be implemented, clearly raised important ethical issues, many of which have been prominent in debates among bioethicists. (shrink)