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Seven Decades: How We Evolved to Live Longer
An anthropologist uncovers new evidence for the evolutionary origins of human longevity—and explains why growing old is an opportunity, not a burden
Our ability to live for decades may seem like a modern luxury made possible by clean water and advances in medicine. In fact, human longevity is a legacy of our unique evolutionary path as a species. Seven Decades challenges the belief that life in the past was “nasty, brutish, and short,” tracing how our capacity for long life came to be and transforming how we think about aging.
Blending vivid storytelling with cutting-edge science, anthropologist Michael Gurven weaves tales from his years of field experience among Indigenous societies whose diet and traditional lifeways are closer to how we all lived prior to industrialization, demonstrating how these communities are relatively free of the chronic diseases of aging such as heart disease, dementia, and diabetes. He provides compelling evidence that our longevity first evolved among our hunting and gathering ancestors and shows how the human body was built to last around seven decades. At a time when people are more likely to live to old age than ever before, Gurven discusses how we can harness this amazing evolutionary feat through a shift in societal values, one that balances self-reliance with interdependence, nurtures multigenerational ties, prioritizes women’s health and longevity, and enables us to rediscover the wisdom of our elders.
Sharing bold new perspectives on human ageing, Seven Decades draws important lessons from our ancestral history, bridging the past with the present to reveal what healthy, happy, and productive old age could look like for all generations.
Our ability to live for decades may seem like a modern luxury made possible by clean water and advances in medicine. In fact, human longevity is a legacy of our unique evolutionary path as a species. Seven Decades challenges the belief that life in the past was “nasty, brutish, and short,” tracing how our capacity for long life came to be and transforming how we think about aging.
Blending vivid storytelling with cutting-edge science, anthropologist Michael Gurven weaves tales from his years of field experience among Indigenous societies whose diet and traditional lifeways are closer to how we all lived prior to industrialization, demonstrating how these communities are relatively free of the chronic diseases of aging such as heart disease, dementia, and diabetes. He provides compelling evidence that our longevity first evolved among our hunting and gathering ancestors and shows how the human body was built to last around seven decades. At a time when people are more likely to live to old age than ever before, Gurven discusses how we can harness this amazing evolutionary feat through a shift in societal values, one that balances self-reliance with interdependence, nurtures multigenerational ties, prioritizes women’s health and longevity, and enables us to rediscover the wisdom of our elders.
Sharing bold new perspectives on human ageing, Seven Decades draws important lessons from our ancestral history, bridging the past with the present to reveal what healthy, happy, and productive old age could look like for all generations.
- GenresScience
536 pages, Hardcover
Published September 16, 2025
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Displaying 1 - 3 of 3 reviews
June 28, 2026
a very timely and validating read as i personally struggle with the declining health and abilities of my aging parents and grandparent. their lack of proactive preparation for this inevitability is deeply troubling to witness—and yet, it’s perfectly normal to be distressed.
Seven Decades puts frustrations with our elders into stark perspective—traditional hunter-gatherer societies are extremely pragmatic about the burdens of aging past the ability to actively contribute. this is to be expected when resources are scarce—it is simply a recurring cost-benefit analysis when the survival of the group is at stake.
funny that this resource dynamic is now especially relevant in the most affluent and inequitable gerontocracy in human history. how could this not create a deep resentment as they oversee climate collapse and the exploitation of our remaining youth? but of course the elite are few and the vast majority of our elders suffer alongside us—we should take care to distinguish so as to not blame other victims.
our evolutionary heritage has been mismatched with a society that values individualism and resource hoarding above all else. there is a more dignified life and death to be had if we can reconcile that we’re in this life together. our species is one of interdependent kin networks that have historically recognized that indefinite lifespan past the point of healthspan is not the end-all-be-all.
Seven Decades puts frustrations with our elders into stark perspective—traditional hunter-gatherer societies are extremely pragmatic about the burdens of aging past the ability to actively contribute. this is to be expected when resources are scarce—it is simply a recurring cost-benefit analysis when the survival of the group is at stake.
funny that this resource dynamic is now especially relevant in the most affluent and inequitable gerontocracy in human history. how could this not create a deep resentment as they oversee climate collapse and the exploitation of our remaining youth? but of course the elite are few and the vast majority of our elders suffer alongside us—we should take care to distinguish so as to not blame other victims.
our evolutionary heritage has been mismatched with a society that values individualism and resource hoarding above all else. there is a more dignified life and death to be had if we can reconcile that we’re in this life together. our species is one of interdependent kin networks that have historically recognized that indefinite lifespan past the point of healthspan is not the end-all-be-all.
May 27, 2026
This book correctly points out that there have been old people in the past. This is a very important point to establish because lots of people are confused about what "life expectancy" means and seem to think that everyone used to drop dead before hitting 40. The author provides evidence and much extrapolation to back up the history of long life and to offer explanations for why humans have lived long lives for thousands of years. As such the subtitle is somewhat misleading because "live longer" is usually used for the idea that we live longer today than people did 200 years ago. But he means we as a species live longer than chimpanzees or whatever, and we have done so for a long time.
For my tastes, there was too much detail about current subsistence cultures, too much mathematical modeling, and too many jarring jokes.
For my tastes, there was too much detail about current subsistence cultures, too much mathematical modeling, and too many jarring jokes.
May 21, 2026
Seven Decades offers a fascinating and accessible exploration of the evolutionary origins of human longevity and the deeper meaning of aging in human societies. Michael D. Gurven combines anthropology, evolutionary science, and firsthand field research to challenge assumptions about aging, health, and modern life. Thought-provoking and deeply humane, the book presents aging not as a burden, but as a central feature of human evolution and social connection.
Displaying 1 - 3 of 3 reviews