Articles tagged with Life Span
A study at Brown University found a connection between protein quality control in muscle tissue and lifespan in fruit flies. Suppressing the activity of activin, a protein complex involved in muscle performance, increased life span by up to 20%. The researchers also discovered a potential link between this protein interplay and human a...
A new study by Yale University researchers found that older adults are more risk-averse than their midlife counterparts when choosing between possible gains, but more risk-seeking when choosing between losses. The study suggests important policy implications for decision-making across the lifespan.
Researchers have identified a mechanism by which Sirt1 promotes neural activity in the brain, leading to significant delays in aging and increases in longevity. The study found that mice with increased Sirt1 expression in their brains exhibited dramatic physical changes, including improved muscle structure and vigor.
Researchers extended mouse lifespan by 20% through gene manipulation, with some organs aging better than others. This increase is equivalent to a 16-year boost in human lifespan, offering insights into aging and potential therapies for age-related diseases.
Bartke, a renowned gerontologist, has made groundbreaking contributions to understanding aging and longevity. His work on the growth hormone/IGF/insulin axis pathway has significantly advanced our knowledge of this complex process.
Researchers investigated rapamycin's effects on aging in mice, finding that it extends lifespan but has only limited impacts on the aging process. The study assessed over 150 traits and found positive effects on memory impairments and red blood cell counts, but no significant impact on wear and tear or disease risk.
Rapamycin treatment improved memory, reduced thyroid follicle size, and decreased cancer rates in older mice. However, its effects were age-independent, with similar benefits seen in young mice, suggesting a potential use for relieving some age-related conditions.
A study led by UC Irvine researchers found that the herbal extract Rhodiola rosea increases fruit fly lifespan by an average of 24 percent. The extract works independently of dietary restriction and affects different molecular pathways. Additionally, it delays physical performance loss and extends the lives of old flies.
A team of evolutionary biologists discovered that male guppies can continue to reproduce for at least 10 months after they die, with stored sperm surviving inside females. This phenomenon increases population size and genetic variation, allowing populations to survive and thrive in environments where males are scarce.
Researchers found that disrupting a mechanism in mitochondria using simple antibiotics can multiply lifespan by a factor of 1.6 in worms. The study suggests that reducing protein production in these organelles may lead to increased longevity. Further studies are needed to confirm the findings in mammals.
Researchers found that increasing parkin levels in fruit flies extended their life span by more than 25 percent, reducing damaged proteins and improving mitochondrial function. The study suggests that boosting cellular 'garbage disposal' could delay the onset of aging-related diseases like Parkinson's and Alzheimer's.
Research reveals that males exposed to constant rivalry mate for longer, but ultimately die earlier and are less able to mate later in life. Fruit flies that were not exposed to rivals continued to mate into old age.
Researchers analyzed death records of 40,139 dogs and found that sterilized dogs lived 9.4 years on average compared to 7.9 years for intact dogs, primarily due to increased risk of cancer and autoimmune diseases.
Research from the University of Gothenburg found that birds with few offspring and delayed reproduction have better-protected telomeres, leading to longer lives. This study sheds light on the correlation between reproduction and aging in animals, particularly species like barnacle geese and elephants.
Researchers discovered a genetic program that promotes longevity in roundworms at cold temperatures and found it exists in humans. The study links calcium signaling to aging for the first time, suggesting exposure to cold air or stimulation of this genetic program may promote mammalian longevity.
Researchers found that omega-6 fatty acids stimulate autophagy in both C. elegans roundworms and human cells, leading to increased lifespan and improved immune response. This discovery suggests that balanced intake of omega nutrients may benefit human health.
Researchers at the University of Tübingen found that spironolactone reduces vascular calcification in klotho-hypomorphic mice, a model for chronic kidney disease. This treatment also increases the life span of these mice. The findings have implications for treating cardiovascular mortality in CKD patients.
Recent review reveals palm trees have living cells sustained throughout their lifetime, potentially holding the key to longevity and understanding cellular structure in plants. Palm trunks consist of individual cells living for centuries, unlike most long-lived trees with dead woody tissues.
The study reveals that removing the worm's germ cells triggers production of dafachronic acid, activating microRNAs that promote longevity. This discovery adds to our understanding of how longevity is regulated.
A Mayo Clinic study found that high levels of BubR1 preserve genomic integrity and reduce age-related disease in mice. The research suggests controlling levels of this regulator could extend healthy life span.
Researchers discovered that a structure in yeast cells called the vacuole plays a critical role in aging and mitochondrial function. Calorie restriction was found to delay aging by boosting vacuolar acidity, which may have parallels in human cells.
Researchers found that great apes, including chimpanzees and orangutans, experience a midlife low in well-being, consistent with the U-shape in human happiness. The study suggests that evolutionary or biological explanations may contribute to this phenomenon.
A new study provides mathematical support for the 'grandmother hypothesis,' which proposes that humans evolved longer adult lifespans due to grandmothers' care. The simulations indicate that with only a little bit of grandmothering, animals with chimpanzee lifespans evolve into humans in less than 60,000 years.
A study published in PLOS ONE found that female Komodo Dragons live significantly shorter lives than males, with an average lifespan of 32 years compared to 60 years. The research suggests that females invest excessive energy in building nests and guarding eggs for up to six months, leading to reduced body size and weight.
Researchers discover fibroblast growth factor-21 (FGF21) increases insulin sensitivity and blocks the growth hormone/insulin-like growth factor-1 signaling pathway, leading to a 30-40% increase in average life span in mice. FGF21 overproduction also results in lean mice with no ill effects from reduced bone density.
Researchers at Arizona State University and Norwegian University of Life Sciences found that resveratrol extends honey bee lifespan by 33-38%, reducing food intake. The compound triggers a moderation effect, making bees less sensitive to sugar concentrations.
A study of noble Korean males found castrated eunuchs lived 14-19 years longer than other men. The incidence of centenarians among Korean eunuchs is 130 times greater than in developed countries, offering clues to life extension.
A new study finds that everyday discrimination against pregnant women of color may contribute to low birth weight babies. Women who experienced more discrimination reported higher levels of depressive symptoms, leading to babies with lower birth weights. The study suggests reducing discrimination could eliminate health disparities in b...
A study by Adrian Bejan suggests that larger bodies tend to have longer lifespans and greater distances traveled. This applies to both animate and inanimate systems, with rivers, jets of air, and vehicles following a similar pattern.
Researchers found that a commercially available acai berry product can triple the lifespan of fruit flies under oxidative stress conditions. Acai also protected normal flies against oxidative stress and neurotoxic effects of paraquat.
Researchers present SCautz, a hybrid intra-container network for modular datacenters, achieving high throughput and improved fault tolerance. The design combines base Kautz topology with redundant commercial switches, reducing costs while maintaining performance.
Scientists measured reactive oxygen species in worms and found high levels during early development, which may determine lifespan. Mutant worm variants lived longer due to better oxidative stress coping mechanisms.
Researchers at Harvard University have successfully created room-temperature quantum bits that can store information for nearly two seconds. This achievement is a significant step towards building a functional quantum computer and opens up new possibilities for various applications such as quantum cash and secure communications.
Dietary restriction in flies prolongs life by enhancing fat metabolism and increasing physical activity, critical for extending lifespan. Blocking fat synthesis negates the effect of dietary restriction.
A study published in Aging Cell found that naked mole rats have high levels of the neuroprotective protein NRG-1, which is linked to their unusually long lifespan. The research suggests that this protein may be a key factor in maintaining brain health and preventing age-related decline.
A study at the Buck Institute found that fruit flies on dietary restriction need physical activity to reap benefits, whereas humans using caloric restriction may also need sufficient calorie intake. The research suggests a potential target for mimicking diet-restricted lifespan benefits through drug development.
Research in Namibia's grasslands reveals that 'fairy circles', circular bare spots surrounded by taller grass, exhibit a life cycle with varying life spans. The study finds that smaller circles are generally shorter-lived than larger ones, with life spans ranging from 24 to 75 years.
Researchers at University of Texas Medical Branch discover new connection between DNA-repair process and cellular signaling network linked to chronic conditions. The study found that a byproduct of DNA repair activates Ras pathways, potentially opening up new avenues for treatments.
Researchers found that long-lived species maintain higher levels of NRG-1 in their brains, with the naked mole rat having the highest levels. This discovery highlights the importance of protective mechanisms in determining species life span and has implications for aging research.
Researchers at Joslin Diabetes Center have identified a critical mechanism involving the TOR protein kinase and master gene regulator proteins SKN-1 and DAF-16, which can increase stress resistance and longevity in various species.
Patients who engage in high-impact sports like football and skiing experience better function and quality-of-life scores than those with lower activity levels. However, this comes at the cost of reduced durability of hip implants, with a 15-year follow-up showing an 80% implant survivorship rate compared to 94% for low-activity patients.
Researchers found that inhibiting only mTORC1, a protein complex regulating growth and differentiation, prolongs life in mice without adverse effects on glucose tolerance or insulin sensitivity. This discovery may lead to the development of a drug specifically targeting mTORC1 to promote longevity while preventing diabetes.
Researchers have discovered a way to separate the beneficial and detrimental effects of rapamycin on aging and disease, specifically targeting mTORC1 protein complexes. This breakthrough could lead to the development of new therapies that combat age-related diseases without causing insulin resistance or diabetes.
A new NIH study reveals that certain genes implicated in schizophrenia and autism show increased regulatory activity during a critical period of development, influenced by environmental factors. This discovery highlights the importance of epigenetic mechanisms like DNA methylation in shaping brain function and behavior.
Researchers found that minuscule amounts of ethanol double the life span of a tiny worm, while higher concentrations are harmful. The discovery raises intriguing possibilities for human health benefits, but more research is needed to understand the mechanism behind this effect.
A new study suggests that US presidents tend to outlive their contemporaries by accessing better healthcare and accumulating wealth and knowledge. This disparity in life expectancy is attributed to factors such as improved medical care and higher educational attainment among presidents compared to the general male population.
A study by University of Illinois at Chicago demographer S. Jay Olshansky found that most US presidents live longer than expected for men of their same age and era. On average, a president's lifespan was 79.8 years during the first eight presidencies
Researchers at Johns Hopkins have successfully manipulated yeast life span by removing and restoring a protein function related to aging. By restoring this function, the organism's life span is dramatically extended. The discovery reveals molecular components of an aging pathway that appears related to one regulating longevity in humans.
A new study from the University of Texas Health Science Center San Antonio challenges the idea that lacking a copy of the IGF1 receptor gene would increase life span. Knocking out one copy of the gene failed to lengthen male mice lifespan, with only modest increases in female mice.
Professor James Vaupel received the prestigious prize for his groundbreaking research on aging, statistics of senescence, and public health longevity. He was recognized for extending human lifespan by two additional years every decade, highlighting no looming limit to human lifespan.
Researchers found that boosting a gene in fruit flies' intestinal stem cells extended their lifespan by up to 50% and delayed the aging of their intestine. The study suggests that the gene, PGC-1, can act as a biological dial for slowing the aging process and may serve as a target for new therapies.
A Stanford University School of Medicine study found that modifying proteins in a laboratory roundworm increases the life span of both the original animal and its descendants, even when the modification is no longer present. This suggests that longevity can be inherited in a non-genetic manner over several generations.
Researchers at Emory University School of Medicine have identified a set of genes that act in muscles to modulate aging and resistance to stress in fruit flies. Mutations in these genes speed up the process of aging and make the flies more sensitive to oxidative stress.
Researchers at Harvard Medical School found that modulating Irs2 levels can slow HD progression by reducing nerve cell damage and increasing lifespan. Decreasing Irs2 levels attenuated symptoms of the disease.
A new collection of research articles focuses on physical activity and sport participation across the lifespan, exploring its benefits for mental, physical, emotional, and social health. The book features contributions from scholars in eight countries and four continents.
Researchers report that certain forms of narcissism can be beneficial for young people, helping them navigate adolescence and early adulthood. In contrast, older adults with similar traits may experience lower life satisfaction and a poorer reputation.
Researchers found that humans experience significant brain shrinkage and degeneration with aging, unlike chimpanzees who do not display comparable losses. The study suggests evolution led to large brains in humans, but also increased vulnerability to age-related brain diseases like Alzheimer's.
A recent study from Lifespan found that molecular lab technology can detect up to 50% more cases of C. difficile (CDI) infection than traditional methods. This increased detection leads to improved patient safety and prevention of hospital-acquired CDI infections.
A new Ohio University study found that mice who switched between a high-fat and low-fat diet lived about 25 percent longer and had better blood glucose levels than obese animals. The yo-yo dieters' lifespan was comparable to that of a control group steadily fed a low-fat diet.
A Scripps Research Institute scientist has identified a new role for a biological pathway that affects lifespan in Caenorhabditis elegans. The study reveals that N-acylethanolamine signaling molecules play a key role in mediating the effect of diet on lifespan.