Many scientists are taking life extension seriously. Aging researchers want to make people live longer and increase the healthy part of their lifespan by reducing the frail part of their lifetime as much as possible. Therein lies the problem, Francesco Mandalà writes in his article on finews.first.


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First, the belief that people will enthusiastically embrace life extension technologies is an exaggeration, as people yearn for the familiar immortality and eternal youth. Life extension is just a consolation prize with several unattractive features. The prospect of larger cohorts of individuals living up to the maximum lifespan of 115 years has adverse consequences for the economy, for single individuals, and, to some extent, from an ethical perspective.

Second, researchers in academic labs do not know how to prevent neurodegeneration, and pharma companies keep on reporting failures in yet another Alzheimer's drug clinical trial. As the greatest risk factor associated with developing Alzheimer's disease is aging, increased longevity may lead to a potentially catastrophic increase in the number of people suffering from age-related dementias, according to biologist Coleen T. Murphy.

«In short, take your pick for a disease-free long life, geroscientists say»

The newly created «longevity science» is called geroscience. The good news is that aging researchers support the traditional prescriptions for a healthy and long life. If you want to live longer, as we were told by our doctor, eat less, exercise regularly, and sleep – and be lucky to have «good» longevity genes and access to good health care. The fact is that long-lived people live longer by staying healthier longer. Interviews with centenarians reveal additional secrets to longevity, including kindness, not having children, avoiding men, smoking 30 cigarettes per day (or not smoking), and drinking whisky (or abstaining from alcohol). In short, take your pick for a disease-free long life, geroscientists say.

Yet, the aging process would continue, as indicated by our physiological changes such as wrinkled faces, gray hair, and slow pace, which happen when we go from being young to old. Back to lab research, in the simplest biological models, aging is what happens when cells are not able to repair fast enough. The research agenda has been organized around the mechanisms contributing to aging, the so-called «hallmarks of aging».

Things like DNA damage, cellular senescence, proteins, and telomere degradation (don’t ask) are widely accepted as processes that accelerate aging when deteriorating and slow aging when improving, according to the Max Planck Institute for Biology of Ageing. Lab research routinely conducted on worms, flies, yeast, and mice has largely contributed to the understanding of the mechanisms regulating aging, leading to the discovery that drugs such as metformin and resveratrol seem to be capable of slowing aging and increasing lifespan.

Crucially, as geroscientists are basic scientists they are less concerned about preserving the quality of life or health span for aged people, including mental health and psychological health. There is no consensus on measuring these crucial social aspects of health, raising serious doubts about geroscience's genuine progress and achievements.

«Virtually every culture has developed a concept of immortality»

Despite these shortcomings, discoveries by longevity scientists and the explosion of anti-aging biotech companies have created the expectations that we will soon be able to take drugs that will significantly extend our lifespan. The news that tech idols Peter Thiel, Larry Page, Sergey Brin and Jeff Bezos invested in anti-aging startups, made it appear safe to assume that life-extending therapies are on the verge of «writing immortality into the genes of the human race», in the words of a biologist.

Virtually every culture has developed a concept of immortality. For the Western culture, the Greek and the Christian views of immortality represent different but quite positive visions of eternal life. The Olympian gods and goddesses, portrayed as beautiful human beings, enjoy immense power and influence. The Christian promise of eternal life in Heaven is a state of perpetual bliss for the immortal soul after death. As an example of a negative representation of eternal life, Jorge Luis Borges describes immortals as apathetic troglodytes, numbed by the boredom of their endless, unchanging days. The point is that scientific research aimed at «writing immortality into the genes of the human race» might not deliver a desirable existence for many people either for religious reasons or for the reason that only in a finite existence do life and actions have a meaning.

«People are barely prepared for a lifespan extending beyond the current life expectancy of about 80 years»

Increasing longevity, declining fertility, and young people cohorts' transition to older ages agitate economists and politicians, who are concerned about the economic impact of aging populations. The logic behind economists' concerns is that population aging is a major drag on economic growth, due to a shrinking working population causing lower labor input growth; savings decrease, as accumulated wealth is used up by retirees; labor productivity decline; and, finally, fading innovation.

The effects of these patterns are plausible and, empirically, are found to be significantly large in aging economies. In addition, an aging population poses formidable challenges to public and private pension systems and the prospect of increasing longevity will only exacerbate this problem, as we argued previously. Society and single individuals are barely prepared for a lifespan extending beyond the current life expectancy of about 80 years.

The quest for life extension has yet to address the challenges of scientific (preservation of healthspan), economic (stagnation and pension systems' sustainability), and cultural (collision with Western culture and values) challenges. The worshipers of longevity seem also to forget that life span is long enough if time is properly employed, which, I suspect, it only rarely is.


Francesco Mandalà is the Chief Investment Officer at MBaer Bank in Switzerland.


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