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الوسم: longevity

  • Insights from Eight Months of Tracking on Healthy Aging

    Insights from Eight Months of Tracking on Healthy Aging

    Most individuals learn about their health through occasional doctor visits and annual blood tests. While helpful, these snapshots only reflect the body’s state at a single moment in time.

    Researchers at the National University of Singapore are investigating an alternative approach: understanding health by observing daily changes and recovery patterns in the body.

    This project, known as DELTA, is highly personal. Professor Dean Ho, director of the Institute for Digital Medicine at the Yong Loo Lin School of Medicine, served as the sole participant.

    His team continuously monitored his body while he altered his diet, exercise routine, fasting periods, and sleep habits.

    The core idea of DELTA is that each person’s biological baseline isn’t static. Factors like sleep, stress, diet, physical activity, illness, and age can cause daily fluctuations in how the body functions. Even the same person might respond differently to the same challenge at different times.

    The study began in August 2024 and is ongoing. Over approximately eight months, Ho wore three consumer health devices—a Whoop tracker, a Garmin smartwatch, and an Apple Watch—which provided repeated data on heart rate, activity levels, recovery metrics, and sleep patterns.

    He also made significant lifestyle changes. Ho frequently fasted for about 20 hours daily and completed several 48-hour fasts. Each morning, he engaged in about 90 minutes of strength or cardio workouts.

    His diet centered on leafy greens, seeds, olive oil, lean proteins, and other foods typical of a Mediterranean diet. Beverage intake was mainly water, electrolytes, black coffee, and black tea—without milk or sugar. It’s important to note this was a personalized experiment, not a public health recommendation.

    A key focus was metabolic flexibility—the body’s ability to switch efficiently between using carbohydrates and fats for energy depending on fasting, activity, or food intake. Researchers tracked how quickly Ho transitioned from primarily burning sugar to relying on stored fat.

    Results showed his switching time improved during the study. Initially taking over 24 hours, it decreased to approximately 16.5 hours, indicating a more responsive metabolism.

    His resting heart rate also dropped significantly—from about 65 beats per minute to 46—suggesting enhanced cardiovascular fitness, though interpreting this value depends on individual health contexts, symptoms, and medications.

    Sleep patterns changed markedly. Ho shifted his bedtime from after midnight to around 9 p.m., with sleep duration increasing from roughly five hours to nearly eight, including more deep sleep and fewer nighttime awakenings.

    The team analyzed Ho’s gut microbiome—the community of microbes in his digestive system—and noted positive changes, such as the absence of Fusobacterium, a potentially harmful bacterium. The data also indicated shifts in how his body conserved energy during fasting periods.

    An AI system was employed to analyze the vast amount of data, acting as a health ‘copilot’ to assess how his body responded and recovered from stress. Remarkably, the system estimated his biological age to be around 32, even though he was 47.

    Biological age attempts to gauge how old the body appears based on measurable biological markers, not simply years since birth. Many such systems focus on a single set of blood, genetic, or physiological indicators. DELTA researchers emphasize that observing how quickly and effectively the body responds and recovers offers additional insights into healthy aging.

    This concept of resilience—how quickly and effectively one recovers from stress—is central to the project. Two people might have similar routine health estimates but react very differently to fasting, workouts, poor sleep, or illness. Measuring recovery speed and quality could reveal health information missed by standard annual exams.

    The findings were published in PLOS One, expanding on earlier research that appeared in PNAS Nexus in 2024. The researchers hope this approach will eventually enable individuals to utilize their personal long-term health data for more tailored health decisions, rather than following generic lifestyle advice.

    The project highlights how dense, continuous health monitoring can uncover subtle changes that routine health checks might miss. Tracking one individual repeatedly provides detailed insights, fostering new questions, measurement techniques, and technologies. It is particularly valuable as an exploratory tool.

    However, a major limitation is that the study involved only one person—who also happened to be the lead researcher. The results cannot be generalized to others, as responses to fasting, exercise, and diet can vary widely. It’s also unclear which specific lifestyle changes caused particular effects, as multiple aspects were altered simultaneously.

    Caution is also warranted regarding the biological age estimate. A 47-year-old with an apparent biological age of 32 doesn’t mean they have literally reversed 15 years of aging. These estimates depend on the measurement methods and models used, and their predictive validity for long-term health still requires validation.

    Furthermore, Ho’s fasting and exercise regimen was quite intensive. Regularly fasting for 20 hours, doing 48-hour fasts, and exercising for 90 minutes every day may not be safe or suitable for everyone—particularly those with certain health conditions, older adults, pregnant women, or individuals with eating disorders. The study should not be viewed as a blueprint for everyone.

    Overall, DELTA showcases the potential of highly personalized health tracking rather than proving an anti-aging breakthrough. Its main contribution is illustrating that health is dynamic, and recovery from various challenges can reveal hidden aspects of well-being beyond routine checkups.

    Larger, more diverse studies will be necessary to determine if these measurements can reliably predict healthier aging or extend lifespan.

    For those interested in wellness, reviewing research on how ultra-processed foods, red meat, and seafood impact longevity can be valuable, along with studies suggesting that olive oil and vitamin D may support healthy aging.

  • Light Exercise Can Reduce Stroke Risk in Atrial Fibrillation Patients

    Light Exercise Can Reduce Stroke Risk in Atrial Fibrillation Patients

    Credit: Unsplash+


    Engaging in regular physical activity is widely recognized for its heart-strengthening benefits, but many individuals with atrial fibrillation worry that exercising might be risky.

    Recent research indicates the opposite may be true. Staying active has been associated with a decreased likelihood of stroke and increased longevity, even among those living with this common arrhythmia.

    Atrial fibrillation occurs when the heart’s upper chambers beat rapidly and irregularly. This irregular heartbeat can cause blood to stagnate inside the heart, raising the risk of clot formation. If a clot travels to the brain, it can block blood flow, leading to a stroke.

    Researchers at UiT The Arctic University of Norway aimed to explore whether physical activity influences these risks. They examined health data from over 87,000 adults involved in two large Norwegian population studies and tracked their health outcomes for approximately 15 years.

    Participants reported their exercise routines, including frequency, duration, and intensity. Throughout the follow-up period, researchers documented newly diagnosed AFib cases, strokes, and mortality rates using national health records.

    The findings consistently showed benefits for those who remained active. Compared to inactive individuals, active participants had a lower risk of both stroke and death, even after adjusting for various other health factors.

    Those engaging in moderate activity experienced the greatest reduction in stroke risk, while the highest levels of activity were linked to the most significant decrease in overall mortality. Even small amounts of exercise offered noticeable health advantages.

    This trend persisted among individuals with AFib. Staying physically active was associated with an estimated lifespan extension of roughly half a year to 1.2 years compared to inactive counterparts with the same condition.

    Dr. Kristoffer Johansen, the lead researcher, emphasized that these results should motivate both healthcare providers and patients, as substantial health improvements can be achieved with modest exercise. There’s no need to become an athlete to reap the benefits.

    Current guidelines recommend at least 150 minutes of moderate activity weekly or 75 minutes of vigorous exercise, along with strength training twice a week. Activities like walking, cycling, swimming, dancing, and gardening can all help meet these goals.

    However, the researchers note that their study cannot definitively prove exercise directly prevented strokes, as it was observational. People who exercise regularly may also have healthier diets, avoid smoking, or possess other beneficial habits. Additionally, activity levels were self-reported by participants.

    This study was published in the Journal of the American Heart Association.

    It stands as one of the largest long-term investigations into exercise and AFib, strengthening confidence in the findings thanks to its size and extended follow-up. Yet, randomized controlled trials would be necessary to establish a direct cause-and-effect relationship.

    Despite these limitations, the evidence suggests that regular physical activity likely plays a vital role in maintaining heart health for individuals with or without AFib.

    Source: UiT The Arctic University of Norway.


  • 90–120 Minutes Weekly Strength Training Could Reduce Death Risk

    90–120 Minutes Weekly Strength Training Could Reduce Death Risk

    Credit: Unsplash+



    For years, health professionals have advised regular exercise to protect the heart and boost overall wellness. Activities like walking, biking, swimming, and jogging have been popular focus points because of their proven benefits.

    Recently, a new study indicates that strength training is equally important, and even a modest amount each week can lead to significant health benefits.

    The research, published in the British Journal of Sports Medicine, tracked over 147,000 adults for nearly thirty years. Scientists aimed to determine if strength training could influence overall mortality risk and specific causes like cardiovascular disease, cancer, and neurological conditions.


    Strength training involves exercises that challenge muscles by making them work against resistance, including lifting weights, using gym machines, carrying heavy objects, or doing body-weight moves such as push-ups and squats. These workouts build muscle mass, enhance balance, and promote strong bones.

    While many associate strength training with athletes or bodybuilders, experts increasingly recognize its importance across all age groups. Strong muscles help maintain mobility, reduce fall risk, and support independence as people age.

    To analyze long-term effects, researchers examined data from three major health studies involving doctors, nurses, and other health professionals. Participants reported their exercise routines every two years.

    The study involved a large sample—more than 147,000 men and women. Nearly half engaged in some form of strength training, with most also participating in aerobic activities.

    Throughout the follow-up, about 36,000 participants passed away. Comparing exercise habits with health outcomes revealed several key insights.

    The most notable finding was that strength training correlated with a lower risk of death. The greatest benefit was observed in individuals who performed roughly 90 to 120 minutes of strength training weekly. Within this range, participants faced a 13% reduction in all-cause mortality compared to those who did not engage in strength exercises.

    Surprisingly, the data suggested that more isn’t always better. When weekly strength training exceeded 120 minutes, benefits plateaued rather than increased, implying that moderate, consistent effort may be most effective.

    The study also looked at specific causes of death. Those doing around 90 to 119 minutes of strength training each week had a 19% lower risk of death from heart disease and a 27% lower risk of death from neurological issues.

    With respect to cancer, the findings were a bit different. Lower amounts of strength training seemed linked to reduced cancer mortality, but larger amounts didn’t demonstrate the same pattern, indicating more research is needed to clarify this relationship.

    Another critical insight was the benefit of combining strength training with aerobic exercises. Participants who regularly did both had the lowest overall risk of death, highlighting the advantage of a balanced workout routine.

    This combination makes sense since aerobic activity improves cardiovascular health and endurance, while strength training preserves muscle mass and functional ability. Together, they offer a comprehensive approach to healthy aging.

    These results are especially relevant as populations age globally. Maintaining muscle strength becomes vital later in life because muscle tends to decline naturally with age. Muscle loss can impair daily tasks and heighten fall and injury risks.

    The researchers noted some limitations, such as reliance on self-reported exercise data, which might lead to inaccuracies. The study didn’t specify workout intensity or include all types of resistance training. Also, as an observational study, it doesn’t establish direct cause-and-effect relationships.

    Nevertheless, the large sample size and lengthy follow-up make this one of the most comprehensive studies to date on strength training and longevity. The findings reinforce that muscle-strengthening activities should be integral to a healthy lifestyle rather than optional extras.

    If muscle health matters to you, consider researching factors that cause muscle weakness in older adults and look into scientific advances aimed at reversing high blood sugar and muscle loss.

    For more health tips, check out recent studies about simple, affordable ways to keep muscles strong, and learn which vegetables are vital for maintaining muscle power.

    Source: Harvard T.H. Chan School of Public Health.



  • Long-term Exercise Tied to Increased Longevity in Women

    Long-term Exercise Tied to Increased Longevity in Women

    Many individuals recognize that exercise benefits overall health, but a recent long-term study highlights just how crucial it can be, especially for women in middle age.

    Researchers at the University of Sydney discovered that women who maintain an active lifestyle over many years have a significantly lower risk of premature death. The study, published in PLOS Medicine, strongly indicates that consistent physical activity can provide lasting health protection.

    The investigation tracked 11,169 women for over twenty years. These women participated in a major national health study in Australia that examined women’s health throughout different life stages. They completed surveys nine times between 1996 and 2019, enabling researchers to observe changes in their activity levels as they aged.

    The study specifically looked at whether women met recommended physical activity guidelines. Health professionals advise adults to aim for at least 150 minutes of moderate to vigorous exercise weekly. This can include activities like brisk walking, gardening, or cycling, provided they elevate the heart rate.

    The results revealed a clear link between sustained physical activity and longevity. Women who consistently met the recommended activity levels had just half the risk of dying compared to women who remained inactive. This substantial difference underscores how regular exercise can significantly impact health over time.

    Numerically, approximately 5.3% of active women died during the study period, compared to 10.4% of inactive women. This shows that even moderate, regular activity can lead to notable health benefits.

    The researchers also explored whether physical activity reduces the risk of death from conditions like heart disease and cancer. While indications were promising, the smaller number of deaths in these categories meant the results were less definitive and warrant further study.

    An important aspect of the research was assessing if it’s ever too late to start exercising. The findings showed some benefits for women who became active later in life, but the evidence wasn’t strong enough to confirm significant protective effects. This suggests that establishing and sticking with an active lifestyle earlier may provide the greatest health advantages.

    Like all research, this study has limitations. The data on activity levels was self-reported, which may not be completely accurate. Additionally, since participants were from a specific age group and country, the findings might not be universally applicable.

    Despite these limitations, the study offers valuable insights into how lifestyle choices influence long-term health. It emphasizes that consistency matters and that maintaining regular activity over many years can greatly lower the risk of early mortality.

    In essence, this research reinforces the idea that staying active is one of the best health strategies for women during midlife. While more studies are needed to understand all the nuances, the core message remains clear: regular movement is beneficial.

    From an analytical perspective, the strength of the study lies in its prolonged follow-up period and behavioral tracking. However, it cannot definitively prove cause-and-effect relationships. Future research should evaluate diverse populations using more precise methods of measuring activity.

    If you’re interested in health and wellness, consider reading about nutrients that may help reduce inflammation in older adults and essential foods for healthy aging.

    For additional health updates, explore recent studies detailing the connection between processed foods and chronic illnesses, as well as straightforward dietary modifications for a healthier life after age 65.

    Source: University of Sydney.

  • Is iPhone 7 Still OK to Use?

    Is iPhone 7 Still OK to Use?

    The iPhone 7, released in September 2016, marked a significant milestone for Apple. Despite its age, many users still wonder if this device remains viable in today’s tech landscape. In this article, we will explore the functionality, software support, and overall performance of the iPhone 7 to help you decide if it’s worth holding onto.

    Performance Overview

    Speed and Efficiency

    The iPhone 7 is powered by the A10 Fusion chip, which was a cutting-edge processor when it was released. Its performance remains fairly strong for everyday tasks:

    • App Launch Speed: The phone can handle common applications smoothly, such as social media, messaging, and browsing.

    • Gaming: While it may struggle with the latest graphics-intensive games, many older titles run without issues.

    • Multitasking: The device can manage multiple apps simultaneously, although performance may lag with newer, resource-heavy applications.

    Battery Life

    The iPhone 7 features a solid battery capacity, which holds up reasonably well for daily use:

    • Video Playback: Up to 13 hours, which is respectable even by today’s standards.

    • Web Browsing: Most users can expect a full day of light to moderate use.

    • Charging: Quick charging is not supported without an accessory, but it remains convenient for casual users.

    Software Support

    iOS Updates

    As of October 2023, the iPhone 7 supports up to iOS 16. However, it’s uncertain how many future updates are in store for this model. Here’s what you should know:

    • Recent Features: iOS 16 introduces several new features; however, some advanced functionalities may be limited or unavailable on older hardware.

    • Security Updates: Regular software updates ensure that your device remains secure, which is critical for protecting personal data.

    App Compatibility

    While many apps continue to support the iPhone 7, developers are increasingly optimizing their offerings for newer models. Consider the following:

    • Older Apps: Most everyday applications, like social media and messaging, are still compatible.

    • Newer Apps: Some updated apps may not function as intended, or at all, on the iPhone 7.

    Camera Capabilities

    Photography

    The iPhone 7 maintains a competent camera system for casual photography:

    • 12 MP Rear Camera: Produces sharp images with good color representation. It performs adequately in various lighting conditions.

    • 7 MP Front Camera: Suitable for selfies and video calls but lacks modern features like portrait mode.

    Video Recording

    The device can record in 4K resolution at 30 fps, making it a decent option for video:

    • Image Stabilization: The built-in stabilization helps produce smoother videos, which is beneficial for casual recording.

    • Playback Quality: Videos appear sharp on the device’s Retina display, although they may not match the quality of newer models.

    Considerations for Continued Use

    Advantages

    • Affordability: If you’re looking for a budget smartphone, the iPhone 7 offers great value in the second-hand market.

    • Durability: The device features a sturdy design with water resistance (IP67), adding to its longevity.

    Limitations

    • Performance Hurdles: As apps and systems evolve, the phone may show its age in speed and capabilities.

    • Limited Future Updates: As support wanes, users may become increasingly vulnerable to security risks.

    Alternatives

    If you find that the iPhone 7 no longer meets your needs, consider these options:

    • iPhone SE (2nd Generation): A more budget-friendly alternative that offers modern features.

    • iPhone 11 or 12: Better performance, cameras, and longevity with software support.

    In summary, the iPhone 7 can still function adequately for basic tasks, but potential buyers or current users should weigh its limitations against their personal needs and preferences.

  • Do all-in-one computers last?

    Do all-in-one computers last?

    All-in-one computers have surged in popularity due to their compact design and sleek aesthetics. These devices combine the monitor and CPU into a single unit, offering a minimalist alternative to traditional desktop setups. However, many consumers wonder about their longevity. How do all-in-one computers hold up over time?

    Understanding All-in-One Computers

    Before diving into their lifespan, it’s essential to understand the basic characteristics of all-in-one computers.

    Features of All-in-One Computers

    • Compact Design: They save space by integrating all components into one device.

    • User-Friendly: Often equipped with touch screens and intuitive interfaces.

    • Aesthetically Pleasing: Available in various designs and colors to match different decors.

    • Limited Upgradeability: Difficulty in upgrading hardware compared to traditional desktops.

    Factors Influencing Longevity

    Several elements play a crucial role in determining how long an all-in-one computer will last.

    Quality of Components

    • Processor Performance: A higher-quality CPU can enhance longevity.

    • Storage Type: Solid-state drives (SSDs) typically offer better durability compared to traditional hard drives.

    • Cooling Systems: Efficient cooling mechanisms help prevent overheating, which can damage internal parts.

    Usage Habits

    • Frequency of Use: Daily heavy usage may wear components faster.

    • Maintenance: Regular cleaning and software updates can extend a computer’s life.

    Technology Evolution

    • Rapid Advancements: New technologies emerge frequently, making older models feel outdated quickly.

    • Software Requirements: Demands from new software may exceed the performance of older hardware.

    Average Lifespan of All-in-One Computers

    On average, all-in-one computers can last anywhere from 3 to 8 years. However, the actual lifespan varies based on careful considerations:

    Entry-Level vs. Premium Models

    • Entry-Level Models: Typically designed for lighter tasks, these might last 3-5 years.

    • Premium Models: Built with better components, they often last longer, around 5-8 years.

    Usage Scenarios

    • Home Use: Mainly for browsing and streaming may lead to a longer lifespan.

    • Business or Gaming Use: Intensive tasks can lead to quicker wear and tear.

    Signs Your All-in-One Computer Needs Replacing

    Recognizing when it’s time to replace your all-in-one computer is essential for optimal performance.

    Common Warning Signs

    • Sluggish Performance: Delay in processing commands or slower load times.

    • Frequent Crashes: Regular system failures can indicate major issues.

    • Incomplete Updates: Inability to run newer operating systems or applications.

    What to Consider

    • Cost of Repair vs. Purchase: Sometimes, the cost of fixing old components may not be worth it.

    • Compatibility Issues: New software may not run efficiently, rendering the device obsolete.

    Maintaining Your All-in-One Computer

    Taking proper care can significantly enhance the lifespan of your all-in-one computer.

    Tips for Maintenance

    • Regular Updates: Keep software and drivers updated for optimal performance.

    • Cleaning: Dust off the vents and hardware components to prevent overheating.

    • Use Surge Protectors: Protects the computer from electrical surges, thus preserving its internal systems.

    What to Avoid

    • Overloading with Apps: This can slow down the computer and may lead to crashes.

    • Ignoring Warning Messages: Act on notifications regarding software or hardware issues promptly.

    Future-Proofing Your All-in-One

    • Choose Higher Specs: Opt for higher specifications if you plan to use the computer for a long time.

    • Evaluate Requirements Regularly: Regularly assess your usage needs to ensure your computer remains suitable.

    All-in-one computers indeed last, but their longevity hinges on various factors, including quality, usage habits, and the ever-evolving tech landscape. By being mindful of these elements, users can enjoy their all-in-one devices for many years without the need for frequent replacements.