Awareness about aging and early symptom of disease can extend life to much more year.
There has been plenty going on here at Lifespan.io, so we thought it was time to give you a little update on what’s been happening.
Continue reading “Raising Awareness that Aging is a Problem Worth Solving” »
LEV Foundation’s flagship research program is a sequence of large mouse lifespan studies, each involving the administration of (various subsets of) at least four interventions that have, individually, shown promise in others’ hands in extending mean and maximum mouse lifespan and healthspan.
We focus on interventions that have shown efficacy when begun only after the mice have reached half their typical life expectancy, and mostly on those that specifically repair some category of accumulating, eventually pathogenic, molecular or cellular damage. The first study in this program is starting in January 2023.
Is digital immortality possible by uploading your mind? Dr. Paul Thagard discusses Neuralink, artificial intelligence, mind uploading, simulation theory, and the challenges involved with whole brain emulation.
Dr. Paul Thagard is a philosopher, cognitive scientist, and author of many interdisciplinary books. He currently teaches as a Distinguished Professor Emeritus of Philosophy at the University of Waterloo, where he founded and directed the Cognitive Science Program.
Continue reading “Paul Thagard — Substrate-Independent Minds” »
In a new review article published in Frontiers in Cell and Developmental Biology, researchers have suggested adding cellular enlargement to the hallmarks of aging [1].
Different cell types are known to have different shapes and sizes, which are dictated by their functions. In humans, sperm cells (male gametes) and ova (female gametes) have the smallest and largest diameters, respectively. On the other hand, some neurons are the longest cells: their axons can be over a meter long.
Nevertheless, within a specific cell type, the size variation is negligible. It has been long observed that healthy cells tend to maintain their size and that size changes are characteristic of pathological conditions. Cancer cells are often smaller than normal cells, while senescence leads to cellular enlargement [2].
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In this video Professor Sebastiano discusses the results that he and his team have had in rejuvenating human cells and how the process could be applied as well as their experience rejuvenating a muscle in an old mouse.
Unity CEO Anirvan Ghosh, Ph.D./courtesy of Unity Biotechnology
Senolytic therapies are, at this point, as revolutionary as checkpoint inhibitors but with broader effectiveness. This approach delays the onset of diseases of aging by removing senescent cells from the body, thus enabling people to remain healthier longer or to regain some degree of function lost to disease.
Senolytics is a new field and most of the research is still in academic centers – most notably, the Mayo Clinic. Approval of any therapeutics is years – perhaps even a decade – away.
During aging, mice, like humans, become inactive and lose muscle mass and strength. A team of scientists led by Johan Auwerx at EPFL have now discovered that when mice age, their muscles become packed with ceramides. Ceramides, known for their use in skin care products, are sphingolipids, a class of fat molecules that are not used to produce energy but rather perform different tasks in the cell.
The researchers found that, in aging, there is an overload of the protein SPT and others, all of which are needed to convert fatty acids and amino acids to ceramides. “The sphingolipids and ceramides are complex yet very interesting fat class, and there is high potential to further study their role in aging, as they perform many diverse functions,” says Dr. Pirkka-Pekka Laurila, a medical doctor and the lead author of the study.
Next, the scientists wanted to see whether reducing ceramide overload could prevent age-related decline in muscle function. They treated old mice with ceramide blockers, such as myriocin and the synthetic blocker Takeda-2, and used adeno-associated viruses to block ceramide synthesis specifically in muscle. The ceramide blockers prevented loss of muscle mass during aging, made the mice stronger, and allowed them to run longer distances while improving their coordination.
This technology will not only extend the lifespan of concrete structures, but also promote a circular economy.
Sewer pipe corrosion, or crown corrosion, occurs when sewage pipe material comes into contact with sulphuric acid. The aging pipe material corrodes, and the pipes crack. Over the past few years, engineers have developed sewer bots to inspect sewage pipes and go to places unsafe for humans.
Professor Yan Zhuge, an engineering expert at the University of South Australia, is trialing a novel solution.
Continue reading “A world-first project that uses ‘self-healing’ concrete to repair sewage pipes” »
In his lively tour of longevity science and pseudoscience, Ward, a British reporter, discovers that researchers are largely not as interested in immortality per se as much as in helping us live fulfilling, active lives until our final day. And while some immortalists hope the culmination of this effort will eventually lead us to never finding that day, Ward leaves the question open.
He begins at the Church of Perpetual Life, a congregation of people who, instead of seeking paradise after death, would rather avoid their demise altogether. There, Ward meets Neal VanDeRee, the church’s pastor, who practices intermittent fasting and envisions a future in which biotechnology advances faster than our bodies break down.
VanDeRee is working to reach what he and other immortalists call “escape velocity” by extending their lives until biotechnology progresses fast enough to keep them alive forever. Another immortalist, Aubrey de Grey, sees this moment as surprisingly close — within 20 to 30 years, or maybe even sooner. It’s quite a claim, but is it possible? “Either we’ll discover we can make people healthy for longer but our lifespan is quite set, as most gerontologists believe, or de Grey’s longevity escape velocity will be proven correct,” Ward writes, never quite telling us which future he is betting on.
Aging remains a primary risk factor for a host of diseases, including leading causes of death. Aging and associated diseases are inherently multifactorial, with numerous contributing factors and phenotypes at the molecular, cellular, tissue, and organismal scales. Despite the complexity of aging phenomena, models currently used in aging research possess limitations. Frequently used in vivo models often have important physiological differences, age at different rates, or are genetically engineered to match late disease phenotypes rather than early causes. Conversely, routinely used in vitro models lack the complex tissue-scale and systemic cues that are disrupted in aging.
