Interdisciplinary Viewpoints

Jonathan Haines, a genetic epidemiologist, reviews the prevalence of AD in the elderly and its economic and social costs.⁵ He describes genetic influences on AD, including mutations and genetic variants that have been found to be associated with the disease, and their relation to anatomical changes in the brain that are probably closely related to functional changes. Despite many advances, the details of the genetic contributions to AD remain cryptic. The disease has devastating effects not only on the victims, but also on their caregivers and family members who bear enormous costs of money and time.

Jacobo Mintzer is a research scientist whose main focus is on AD investigations. In his essay he identifies what he believes to be the current principal ethical issue related to AD research: protection of subjects who are vulnerable owing to their dementia.^{Reference Mintzer6} The ethical problem he sees for the future of AD investigations, however, is the development of methods to ensure that individuals participating as research subjects and others in their communities have access to any effective new treatments that arise from that research. He proposes a model for approaching ethical issues differently by relying on identification of specific biomarkers that will allow focused research aimed at benefiting specific individuals through targeted therapy rather than large groups of those who suffer from dementia.

Annette Leibing, a medical anthropologist currently teaching and doing research in Canada, is concerned that preventive measures in AD are viewed quite differently in different locations owing to differences in epistemic cultures, and compares the US emphasis on drug therapies for early intervention with the European emphasis on lifestyle changes.^{Reference Leibing7} She describes what she calls the “new dementia” as a generally accepted recognition that interventions occur far too late and need to begin earlier, as well as recent changes in agendas now aiming either toward pre-symptomatic detection by such laboratory findings as biomarkers or toward pre-symptomatic detection by observation of very early symptoms. Early preventive measures are best understood if they are situated in their geo-social and cultural contexts, which she calls “situated prevention.”

Pia Kontos (with her postdoctoral fellow Alisa Grigorovich) is a rehabilitation scientist working in Toronto who focuses on long-term dementia care that utilizes the arts, such as music and dance, to enrich the lives of people with dementia.^{Reference Kontos and Gregorovitch8} She describes the use of dance as a therapeutic tool that emphasizes embodied cognition and argues that dance as a form of therapy needs to be more extensively used to help develop creative self-expression in those who live with dementia. Starting with recognition of corporeality and relationality as fundamental aspects of human existence, she argues for a new ethic of pre-reflective intercorporeal sensibility that necessitates development of public policies designed to create relational environments that permit even severely demented individuals to flourish.

Robert Blank is a political scientist who has a broad interest in public policy, including policy related to the human brain. He attributes difficult policy dilemmas to widespread fear of AD and anticipated huge increases in prevalence and costs related to the disease.^{Reference Blank9} He reviews specifically what are the monetary and human costs of AD as well as policy initiatives in this country. He explores two specific areas as examples of policy dilemmas: widely debated questions surrounding advance directives, assisted suicide, and euthanasia, and policies to protect people from exploitation of fear of the disease through unethical practices, such as marketing of AD products and technologies and direct-to-consumer advertising of brain interventions. Any future policy development will be difficult because AD produces very strong emotions and divisions arising from interest group politics.

Dena Davis is an attorney and ethicist who has had a long-time interest in end-of-life issues. She describes the deep-seated fear that most Americans have of AD, leading some to wish their lives to end before they descend into the dementia associated with AD.^{Reference Davis10} Unfortunately, there is no legal way to accomplish this; under current state laws, an advance directive can hasten death only if a life-sustaining treatment can be discontinued. Moreover, there is a controversial philosophical and practical problem with what has been called “prospective autonomy,” in which the person whom one becomes is not the same person who created the advance directive — if that is so, why should such a directive be respected? Thus, advance directives are not useful for shortening one's life in the face of advancing AD; to achieve that goal legally, the subject must move to one of the few countries where euthanasia is legal.

Elinor Fuchs is not a health care professional, rather, she is a professor of dramaturgy who was the caregiver for her mother during the decade of deepening dementia before her mother's death. In a thoroughly engaging essay, she describes the care of an AD patient from the perspective of the caregiver.^{Reference Fuchs11} She addresses what she considers to be a central issue of providing such care, a conflict between what she calls medicalists and humanists — those who work toward a cure versus those who want to advance personhood through various art forms. [Examples of both approaches can be found elsewhere in this symposium — Ed.] She enters the debate between those who believe caregivers should anchor AD patients in reality and those who believe one should join them in their own worlds. Her engaging story of the giraffe in the hallway provides a persuasive response to that debate.