https://www.sciencedaily.com/news/health_medicine/fitness/ Physical fitness and exercise. Check out the latest articles on physical fitness, weight lifting programs, and new methods for improving exercise performance. en-us Thu, 14 May 2026 10:29:35 EDT Thu, 14 May 2026 10:29:35 EDT 60 https://www.sciencedaily.com/images/scidaily-logo-rss.png https://www.sciencedaily.com/news/health_medicine/fitness/ For more science news, visit ScienceDaily. https://www.sciencedaily.com/releases/2026/05/260512202350.htm A huge long-term study found that drinking two to three cups of coffee a day was linked to a much lower risk of dementia, especially before age 75. Researchers say caffeine may help keep brain cells active while reducing inflammation and harmful plaque buildup associated with Alzheimer’s disease. But more coffee wasn’t better — the protective effect appeared to level off after moderate intake. Wed, 13 May 2026 10:29:59 EDT https://www.sciencedaily.com/releases/2026/05/260512202350.htm https://www.sciencedaily.com/releases/2026/05/260510234726.htm Researchers say fructose is not just “empty calories” — it may actively push the body toward fat storage and metabolic disease. A new review found that fructose affects the body differently from glucose, disrupting normal energy regulation and promoting processes linked to obesity, insulin resistance, and cardiovascular problems. Mon, 11 May 2026 08:28:23 EDT https://www.sciencedaily.com/releases/2026/05/260510234726.htm https://www.sciencedaily.com/releases/2026/05/260510234722.htm Staying strong may be one of the biggest secrets to living longer — especially for older women. A major study of more than 5,000 women found that simple signs of muscle strength, like a firm hand grip or the ability to quickly stand up from a chair, were strongly linked to lower risk of death over the next eight years. Mon, 11 May 2026 21:13:48 EDT https://www.sciencedaily.com/releases/2026/05/260510234722.htm https://www.sciencedaily.com/releases/2026/05/260510234655.htm A new international analysis suggests there may be a surprisingly simple secret to keeping weight off after dieting: walking about 8,500 steps a day. Researchers found that people who boosted their daily steps to around that level during a weight-loss program — and kept it up afterward — were far more successful at avoiding the frustrating cycle of regaining lost weight. The study highlights a major challenge in obesity treatment, since most people regain much of the weight they lose within a few years. Sun, 10 May 2026 23:46:55 EDT https://www.sciencedaily.com/releases/2026/05/260510234655.htm https://www.sciencedaily.com/releases/2026/05/260510234654.htm A major new analysis suggests semaglutide (Ozempic, Wegovy) works remarkably well in adults over 65, helping many lose substantial amounts of weight while improving heart and metabolic health. Participants taking the drug lost over 15% of their body weight on average — far more than those receiving placebo treatment. Many also moved out of obesity categories entirely and reached healthier weight levels. Mon, 11 May 2026 00:57:51 EDT https://www.sciencedaily.com/releases/2026/05/260510234654.htm https://www.sciencedaily.com/releases/2026/05/260509210644.htm Ultra-processed foods may be doing far more damage than many people realize. A major new European cardiology report warns that people who eat the most ultra-processed foods face significantly higher risks of heart disease, irregular heart rhythms, obesity, diabetes, high blood pressure, and even cardiovascular death. Researchers say these industrially manufactured foods — often packed with sugar, salt, unhealthy fats, and additives — can disrupt metabolism, trigger inflammation, and promote overeating, even when marketed as “healthy.” Sun, 10 May 2026 20:59:36 EDT https://www.sciencedaily.com/releases/2026/05/260509210644.htm https://www.sciencedaily.com/releases/2026/05/260508171123.htm Scientists have uncovered a surprising secret hidden inside fat cells that could reshape how we think about obesity and metabolic disease. A protein called HSL, long believed to simply release stored fat when the body needs energy, turns out to have a second job deep inside the nucleus of fat cells—helping keep those cells healthy and balanced. Even more surprising, people and mice missing this protein don’t become obese as expected; instead, they lose fat tissue in a dangerous condition called lipodystrophy. Fri, 08 May 2026 17:21:20 EDT https://www.sciencedaily.com/releases/2026/05/260508171123.htm https://www.sciencedaily.com/releases/2026/05/260508003123.htm A new study shows that listening to your own favorite workout music can dramatically boost endurance. Cyclists exercising with self-selected songs lasted nearly 20% longer than when riding in silence, yet they didn’t feel more exhausted at the end. Researchers say music may help people stay in the “pain zone” longer without increasing perceived strain. Sat, 09 May 2026 08:56:34 EDT https://www.sciencedaily.com/releases/2026/05/260508003123.htm https://www.sciencedaily.com/releases/2026/05/260506225428.htm Researchers have created a next-generation obesity drug that works like a “Trojan horse,” using GLP-1/GIP signals to slip a powerful metabolic enhancer directly into target cells. In mice, it outperformed existing treatments—curbing appetite, increasing weight loss, and improving blood sugar levels. Because the extra drug acts only where it’s needed, it can be used at much lower doses, potentially reducing side effects. Thu, 07 May 2026 06:37:46 EDT https://www.sciencedaily.com/releases/2026/05/260506225428.htm https://www.sciencedaily.com/releases/2026/05/260506225235.htm Aging doesn’t just add fat—it redistributes it in risky ways, pushing more into the abdomen where it can harm health. Scientists found that testosterone plays a key role in this shift. In older women recovering from hip fractures, a testosterone gel combined with exercise helped prevent the usual rise in dangerous visceral fat. The result could point to a powerful new strategy for improving recovery and long-term health. Thu, 07 May 2026 05:25:59 EDT https://www.sciencedaily.com/releases/2026/05/260506225235.htm https://www.sciencedaily.com/releases/2026/05/260504211842.htm Scientists have developed a breakthrough injectable biomaterial that travels through the bloodstream to repair damaged tissue from within, reducing inflammation and jumpstarting healing. In animal studies, it successfully treated heart attack damage and even showed promise for conditions like traumatic brain injury and pulmonary hypertension. Unlike earlier approaches that required direct injection into the heart, this new therapy can be delivered intravenously, allowing it to spread evenly and act quickly. Tue, 05 May 2026 14:20:47 EDT https://www.sciencedaily.com/releases/2026/05/260504211842.htm https://www.sciencedaily.com/releases/2026/05/260504211836.htm A new study suggests travel could be a surprisingly powerful anti-aging tool. By viewing tourism through the lens of entropy, researchers found that positive travel experiences may help the body stay balanced and resilient. Activities like exploring new places, staying active, and connecting with others can boost immunity, metabolism, and stress recovery. However, stressful or unsafe travel could reverse these benefits. Mon, 04 May 2026 22:42:07 EDT https://www.sciencedaily.com/releases/2026/05/260504211836.htm https://www.sciencedaily.com/releases/2026/05/260504023828.htm Creatine might be famous in the gym, but its real story is far more interesting. Naturally produced in the body, it helps power cells by rapidly regenerating ATP—the fuel that keeps muscles, the brain, and even the heart running during intense activity. Supplementing with creatine can boost short bursts of physical performance and may even support memory, mood, and cognitive speed, especially in people with lower baseline levels. Mon, 04 May 2026 04:13:48 EDT https://www.sciencedaily.com/releases/2026/05/260504023828.htm https://www.sciencedaily.com/releases/2026/04/260430213503.htm A key protein involved in fat metabolism has been found to do more than scientists once thought. Instead of just releasing fat, it helps maintain healthy fat tissue and balance in the body. When it’s missing or disrupted, the results can be surprisingly harmful. This finding reshapes how researchers think about obesity and metabolic disease. Thu, 30 Apr 2026 21:40:07 EDT https://www.sciencedaily.com/releases/2026/04/260430213503.htm https://www.sciencedaily.com/releases/2026/04/260430032411.htm A major review of 217 trials shows that aerobic exercise is the most effective option for managing knee osteoarthritis. Activities like walking, cycling, and swimming outperformed other exercise types in reducing pain and improving movement. While alternatives like strength training and mind-body exercises help, they are best used alongside aerobic workouts. The findings also confirm that exercise is a safe and essential part of treatment. Thu, 30 Apr 2026 03:30:17 EDT https://www.sciencedaily.com/releases/2026/04/260430032411.htm https://www.sciencedaily.com/releases/2026/04/260426012305.htm Mixing up your workouts might be the real secret to a longer life. Long-term research tracking over 100,000 people for more than three decades suggests that doing a variety of physical activities—rather than just more of the same—can significantly lower the risk of death. Interestingly, the benefits don’t keep rising endlessly; they seem to level off after a certain point, hinting at a “sweet spot” of activity. Mon, 27 Apr 2026 01:32:16 EDT https://www.sciencedaily.com/releases/2026/04/260426012305.htm https://www.sciencedaily.com/releases/2026/04/260426012303.htm Fish oil has long been praised as brain-boosting, but new research suggests the story may be more complicated. Scientists found that in people with repeated mild head injuries, a key omega-3 fatty acid in fish oil—EPA—may actually interfere with the brain’s ability to repair itself. Instead of helping recovery, it appears to weaken blood vessel stability, disrupt healing signals, and even contribute to harmful protein buildup linked to cognitive decline. Sun, 26 Apr 2026 01:57:51 EDT https://www.sciencedaily.com/releases/2026/04/260426012303.htm https://www.sciencedaily.com/releases/2026/04/260414075637.htm Bread and other carbohydrate staples may be doing more than just filling plates—they could be quietly reshaping metabolism. In a surprising twist, researchers found that mice strongly preferred carbs like bread, rice, and wheat, abandoning their regular diet entirely. Even without eating more calories, they gained weight and body fat, not because they overate, but because their bodies burned less energy. Tue, 14 Apr 2026 09:21:12 EDT https://www.sciencedaily.com/releases/2026/04/260414075637.htm https://www.sciencedaily.com/releases/2026/04/260413043129.htm New research reveals that obesity affects men and women in surprisingly different ways. Men are more likely to develop harmful abdominal fat and signs of liver stress, while women show higher inflammation and cholesterol levels. These differences could help explain why health risks vary between sexes. Scientists say this could lead to more tailored treatments for obesity. Mon, 13 Apr 2026 09:29:20 EDT https://www.sciencedaily.com/releases/2026/04/260413043129.htm https://www.sciencedaily.com/releases/2026/04/260412221946.htm A newly discovered molecule could reshape the future of weight loss treatments by mimicking the powerful appetite-suppressing effects of drugs like Ozempic — but without many of the unpleasant side effects. Identified using artificial intelligence, this tiny peptide, called BRP, appears to act directly on the brain’s appetite-control center, helping animals eat less and lose fat without nausea or muscle loss. Sun, 12 Apr 2026 22:34:37 EDT https://www.sciencedaily.com/releases/2026/04/260412221946.htm https://www.sciencedaily.com/releases/2026/04/260411022023.htm Putting on weight earlier in life may be more dangerous than previously thought. Researchers found that early adulthood obesity significantly raises the risk of premature death, especially from major diseases like heart disease and diabetes. The longer the body carries excess weight, the greater the damage appears to be. Interestingly, cancer risk in women didn’t follow this pattern, suggesting other biological factors are at play. Sat, 11 Apr 2026 09:54:18 EDT https://www.sciencedaily.com/releases/2026/04/260411022023.htm https://www.sciencedaily.com/releases/2026/04/260406192913.htm A single week of intensive meditation and mind-body practices led to measurable changes across the brain and body. Researchers observed improved brain efficiency, boosted immune signaling, and increased natural pain relief chemicals in participants’ blood. The effects even promoted neuron growth and stronger brain connectivity. Surprisingly, the experience mirrored psychedelic-like brain states—without any drugs involved. Tue, 07 Apr 2026 03:56:04 EDT https://www.sciencedaily.com/releases/2026/04/260406192913.htm https://www.sciencedaily.com/releases/2026/04/260406192811.htm Your brain’s “stop eating” signal may come from an unexpected source. Researchers found that astrocytes—once thought to just support neurons—actually play a key role in controlling appetite. After a meal, glucose triggers tanycytes, which send signals to astrocytes that then activate fullness neurons. This newly discovered pathway could lead to innovative treatments for obesity and eating disorders. Mon, 06 Apr 2026 19:28:11 EDT https://www.sciencedaily.com/releases/2026/04/260406192811.htm https://www.sciencedaily.com/releases/2026/04/260402000229.htm A new study suggests that one of the most widely used health metrics, BMI, may be getting it wrong for a large portion of the population. By comparing BMI classifications with precise body fat measurements using advanced DXA scans, researchers found that more than one-third of adults were placed in incorrect weight categories. Many people labeled as overweight or obese did not actually have the corresponding body fat levels, while others were missed entirely. Fri, 03 Apr 2026 00:19:13 EDT https://www.sciencedaily.com/releases/2026/04/260402000229.htm https://www.sciencedaily.com/releases/2026/04/260401071940.htm Hara hachi bu, a traditional Japanese practice of eating until you’re about 80% full, is gaining attention as a simple yet powerful way to improve health and reshape our relationship with food. Rather than promoting strict dieting, it encourages slowing down, tuning into hunger cues, and eating with awareness and gratitude. Research suggests it may help reduce calorie intake, support healthier food choices, and prevent long-term weight gain. Thu, 02 Apr 2026 07:03:26 EDT https://www.sciencedaily.com/releases/2026/04/260401071940.htm https://www.sciencedaily.com/releases/2026/03/260330001126.htm Just a few minutes of getting out of breath each day could dramatically cut your risk of major diseases—including heart disease, dementia, and diabetes. A large study of nearly 100,000 people found that it’s not just how much you move, but how intensely you move that matters. Short bursts of vigorous activity—like rushing for a bus or climbing stairs quickly—were linked to striking reductions in disease risk, especially for inflammatory conditions and brain health. Mon, 30 Mar 2026 01:07:46 EDT https://www.sciencedaily.com/releases/2026/03/260330001126.htm https://www.sciencedaily.com/releases/2026/03/260328024515.htm Scientists have identified a key biological system that helps brown fat burn energy by building the networks it needs to function. A protein called SLIT3 splits into two parts, with each piece guiding the growth of blood vessels and nerves inside brown fat. These structures allow the tissue to pull in nutrients and rapidly convert them into heat instead of storing them as fat. Sat, 28 Mar 2026 03:19:56 EDT https://www.sciencedaily.com/releases/2026/03/260328024515.htm https://www.sciencedaily.com/releases/2026/03/260326075559.htm Having both excess belly fat and low muscle mass isn’t just unhealthy—it’s potentially deadly, raising the risk of death by 83%. This condition, called sarcopenic obesity, creates a vicious cycle where fat accelerates muscle breakdown and inflammation. Researchers found it can be identified using simple measurements, not costly medical tests. That means earlier detection—and a real chance to intervene before serious decline sets in. Fri, 27 Mar 2026 01:23:23 EDT https://www.sciencedaily.com/releases/2026/03/260326075559.htm https://www.sciencedaily.com/releases/2026/03/260323005543.htm Postmenopausal women may have a powerful new edge in the battle against weight gain. A Mayo Clinic study found that those using menopausal hormone therapy while taking the obesity drug tirzepatide lost about 35% more weight than those on the drug alone. The findings hint at a surprising synergy between hormones and cutting-edge weight-loss medications, potentially opening the door to more effective, personalized treatments for millions of women facing increased cardiometabolic risks after menopause. Mon, 23 Mar 2026 21:06:37 EDT https://www.sciencedaily.com/releases/2026/03/260323005543.htm https://www.sciencedaily.com/releases/2026/03/260319074604.htm Eating large amounts of ultra-processed foods like chips, frozen meals, sugary drinks, and packaged snacks may significantly raise the risk of serious heart problems. In a major U.S. study, people consuming around nine servings per day had a 67% higher risk of heart attacks, strokes, or death from heart disease compared to those eating about one serving. The risk didn’t just jump at high levels either. Each additional daily serving increased the likelihood of these events by more than 5%, even after accounting for calories, overall diet quality, and common health conditions. Thu, 19 Mar 2026 20:54:23 EDT https://www.sciencedaily.com/releases/2026/03/260319074604.htm https://www.sciencedaily.com/releases/2026/03/260319044648.htm Stopping popular weight-loss injections like Ozempic or Mounjaro might not trigger the dramatic rebound many fear. A large real-world study of nearly 8,000 patients found that most people who discontinue these drugs manage to keep the weight off—or even continue losing—by restarting treatment, switching medications, or adopting lifestyle changes. While earlier clinical trials suggested rapid weight regain, this new evidence paints a more hopeful picture. Thu, 19 Mar 2026 23:08:04 EDT https://www.sciencedaily.com/releases/2026/03/260319044648.htm https://www.sciencedaily.com/releases/2026/03/260318033100.htm Cycling might be one of the simplest ways for older adults to stay healthier, longer. A 10-year study in Japan found that seniors who rode bicycles had lower risks of needing long-term care and dying—especially those who didn’t drive. Continuing or even starting cycling later in life still delivered noticeable benefits. The results highlight biking as a surprisingly powerful tool for maintaining independence and well-being. Wed, 18 Mar 2026 18:01:48 EDT https://www.sciencedaily.com/releases/2026/03/260318033100.htm https://www.sciencedaily.com/releases/2026/03/260314030521.htm When the Asian financial crisis sent rice prices soaring in Indonesia in the late 1990s, the shock didn’t just strain household budgets—it left lasting marks on children’s bodies. Researchers from the University of Bonn found that kids exposed to the food price surge were more likely to experience stunted growth and, years later, a higher risk of obesity. The findings suggest that during crises, families often maintain calorie intake but cut back on nutrient-rich foods, creating hidden nutritional deficiencies that disrupt healthy development. Sun, 15 Mar 2026 04:53:48 EDT https://www.sciencedaily.com/releases/2026/03/260314030521.htm https://www.sciencedaily.com/releases/2026/03/260313062539.htm Cambridge scientists have discovered a light-powered chemical reaction that lets researchers modify complex drug molecules at the final stages of development. Unlike traditional methods that rely on toxic chemicals and harsh conditions, the new approach uses an LED lamp to create essential carbon–carbon bonds under mild conditions. This could make drug discovery faster and more environmentally friendly. The breakthrough was uncovered unexpectedly during a failed laboratory experiment. Sat, 14 Mar 2026 01:56:59 EDT https://www.sciencedaily.com/releases/2026/03/260313062539.htm https://www.sciencedaily.com/releases/2026/03/260308201620.htm Exercise normally boosts the body’s ability to use oxygen, a key marker of health and longevity — but high blood sugar can block that benefit. Researchers found that a ketogenic diet helped mice normalize blood sugar and dramatically improved how their muscles responded to exercise. Their muscles became better at using oxygen and built more endurance fibers. The results suggest diet and exercise may work together in surprising ways to improve metabolic health. Mon, 09 Mar 2026 18:24:51 EDT https://www.sciencedaily.com/releases/2026/03/260308201620.htm https://www.sciencedaily.com/releases/2026/03/260307213252.htm A growing trend called “fibermaxxing” is putting dietary fiber in the spotlight—and for good reason. Fiber plays a powerful role in keeping the body healthy, from supporting digestion and feeding beneficial gut microbes to helping regulate blood sugar and cholesterol. Researchers say getting enough fiber may even lower the risk of conditions like obesity, diabetes, and certain cancers. Sun, 08 Mar 2026 15:57:15 EDT https://www.sciencedaily.com/releases/2026/03/260307213252.htm https://www.sciencedaily.com/releases/2026/03/260307213228.htm A Yale study found that lowering parent stress can help protect young children from obesity. When parents practiced mindfulness and stress-management skills, their kids showed healthier eating patterns and avoided the weight gain seen in families that only focused on diet and exercise. Sun, 08 Mar 2026 20:28:48 EDT https://www.sciencedaily.com/releases/2026/03/260307213228.htm https://www.sciencedaily.com/releases/2026/03/260306145616.htm CBD and CBG, two non-intoxicating cannabis compounds, may help combat fatty liver disease by boosting liver energy reserves and restoring cellular cleanup systems. In the study, both compounds improved blood sugar control and reduced harmful lipids linked to fatty liver disease. Researchers say the findings point to a promising new plant-based approach to treating metabolic liver disorders. Fri, 06 Mar 2026 15:17:26 EST https://www.sciencedaily.com/releases/2026/03/260306145616.htm https://www.sciencedaily.com/releases/2026/03/260303145725.htm Stiff knees and aching hips may seem like an inevitable part of aging, but experts say we’re getting osteoarthritis all wrong. Despite affecting nearly 600 million people worldwide — and potentially a billion by 2050 — the most powerful treatment isn’t surgery or medication. It’s exercise. Movement nourishes cartilage, strengthens muscles, reduces inflammation, and even reshapes the biological processes driving joint damage. Wed, 04 Mar 2026 16:35:02 EST https://www.sciencedaily.com/releases/2026/03/260303145725.htm https://www.sciencedaily.com/releases/2026/02/260227071914.htm Researchers found that cutting two amino acids common in animal protein—methionine and cysteine—made mice burn significantly more energy. The boost in heat production was nearly as powerful as constant exposure to cold temperatures. The mice didn’t eat less or exercise more; they simply generated more heat in their beige fat. The discovery hints that diet alone might activate the body’s calorie-burning machinery. Fri, 27 Feb 2026 13:05:43 EST https://www.sciencedaily.com/releases/2026/02/260227071914.htm https://www.sciencedaily.com/releases/2026/02/260227061818.htm Heart disease is on track to tighten its grip on American women. New projections from the American Heart Association warn that over the next 25 years, cardiovascular disease will rise sharply, driven largely by a surge in high blood pressure, diabetes, and obesity. By 2050, nearly 60% of women in the U.S. could have high blood pressure, and close to one in three women ages 22 to 44 may already be living with some form of heart disease. Fri, 27 Feb 2026 06:18:18 EST https://www.sciencedaily.com/releases/2026/02/260227061818.htm https://www.sciencedaily.com/releases/2026/02/260226042449.htm “Forever chemicals” known as PFAS have quietly infiltrated everything from nonstick pans to food packaging—and now new research suggests some of them may be speeding up the aging process itself. In a nationally representative U.S. study, two lesser-known PFAS compounds, PFNA and PFOSA, were found in 95% of participants and strongly linked to faster biological aging in men aged 50 to 64. Thu, 26 Feb 2026 04:24:49 EST https://www.sciencedaily.com/releases/2026/02/260226042449.htm https://www.sciencedaily.com/releases/2026/02/260225081217.htm Eating nothing but oatmeal for just two days might sound extreme, but it delivered a striking payoff in a new clinical trial. People with metabolic syndrome who followed a short, calorie-reduced oat-based plan saw their harmful LDL cholesterol drop by 10%, along with modest weight loss and lower blood pressure. Even more surprising, the cholesterol benefits were still visible six weeks later. Wed, 25 Feb 2026 11:37:57 EST https://www.sciencedaily.com/releases/2026/02/260225081217.htm https://www.sciencedaily.com/releases/2026/02/260225081214.htm Avoiding meat might slightly lower the odds of reaching 100 — but only for frail, underweight seniors. In very old age, staying strong and maintaining muscle matters more than long-term disease prevention. Older adults who included fish, eggs, or dairy were just as likely to become centenarians as meat eaters, suggesting that key nutrients may make the difference. The takeaway: nutrition needs change dramatically with age. Thu, 26 Feb 2026 03:57:06 EST https://www.sciencedaily.com/releases/2026/02/260225081214.htm https://www.sciencedaily.com/releases/2026/02/260222092317.htm Training harder may do more than build muscle—it could transform your gut. Researchers found that intense workouts change the balance of bacteria and important compounds in athletes’ digestive systems. When training loads dropped, diet quality slipped and digestion slowed, triggering different microbial shifts. These hidden changes might influence performance in ways scientists are only beginning to understand. Mon, 23 Feb 2026 23:45:43 EST https://www.sciencedaily.com/releases/2026/02/260222092317.htm https://www.sciencedaily.com/releases/2026/02/260222092306.htm A UCLA study in mice reveals that aging muscle stem cells accumulate a protein that slows repair but boosts survival. This protein, NDRG1, acts like a brake, preventing cells from activating quickly after injury. When researchers blocked it in older mice, muscle healing sped up dramatically — but stem cells became less resilient over time. The work suggests aging may reflect a survival trade-off rather than straightforward decline. Mon, 23 Feb 2026 23:02:05 EST https://www.sciencedaily.com/releases/2026/02/260222092306.htm https://www.sciencedaily.com/releases/2026/02/260221060952.htm Living at high altitude appears to protect against diabetes, and scientists have finally discovered the reason. When oxygen levels drop, red blood cells switch into a new metabolic mode and absorb large amounts of glucose from the blood. This helps the body cope with thin air while also reducing blood sugar levels. A drug that recreates this effect reversed diabetes in mice, hinting at a powerful new treatment strategy. Sat, 21 Feb 2026 08:43:47 EST https://www.sciencedaily.com/releases/2026/02/260221060952.htm https://www.sciencedaily.com/releases/2026/02/260221060946.htm Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red blood cells in ways that make them less flexible and more prone to breakdown, potentially interfering with how they deliver oxygen throughout the body. Scientists found signs of both mechanical stress from intense blood flow and molecular damage linked to inflammation and oxidative stress. Sat, 21 Feb 2026 07:59:29 EST https://www.sciencedaily.com/releases/2026/02/260221060946.htm https://www.sciencedaily.com/releases/2026/02/260221000317.htm A sweeping new scientific review suggests that pecans — America’s native nut — may pack more heart power than many people realize. After analyzing over 20 years of research, scientists found consistent evidence that eating pecans can improve key markers of cardiovascular health, including total cholesterol and “bad” LDL cholesterol, while also supporting antioxidant defenses. Sun, 22 Feb 2026 08:52:17 EST https://www.sciencedaily.com/releases/2026/02/260221000317.htm https://www.sciencedaily.com/releases/2026/02/260221000255.htm Chronic wounds often spiral out of control because oxygen can’t reach the deepest layers of injured tissue. A new gel developed at UC Riverside delivers a continuous flow of oxygen right where it’s needed most, using a tiny battery-powered system. In high-risk mice, wounds healed in weeks instead of worsening. The innovation could dramatically reduce amputations—and may even open doors for lab-grown organs. Sun, 22 Feb 2026 08:14:18 EST https://www.sciencedaily.com/releases/2026/02/260221000255.htm https://www.sciencedaily.com/releases/2026/02/260213223918.htm Scientists at Michigan State University have uncovered the molecular “switch” that powers sperm for their final, high-speed dash toward an egg. By tracking how sperm use glucose as fuel, the team discovered how dormant cells suddenly flip into overdrive, burning energy in a carefully controlled, multi-step process. A key enzyme, aldolase, helps convert sugar into the burst of power needed for fertilization, while other enzymes act like traffic controllers directing the flow of fuel. Sat, 14 Feb 2026 10:47:27 EST https://www.sciencedaily.com/releases/2026/02/260213223918.htm https://www.sciencedaily.com/releases/2026/02/260213020412.htm A sweeping review of global research suggests that exercise—especially aerobic activities like running, swimming, and dancing—can be one of the most powerful ways to ease depression and anxiety. Across tens of thousands of people aged 10 to 90, exercise consistently reduced symptoms, often matching or even outperforming medication and talk therapy. Mon, 16 Feb 2026 01:58:04 EST https://www.sciencedaily.com/releases/2026/02/260213020412.htm https://www.sciencedaily.com/releases/2026/02/260211073033.htm Three major reviews commissioned by the World Health Organization find that GLP-1 drugs including tirzepatide (sold as Mounjaro and Zepbound), semaglutide (Ozempic and Wegovy), and liraglutide (Victoza and Saxenda) can lead to substantial weight loss in people with obesity. But while the results are impressive, researchers caution that most trials were funded by drugmakers, long term safety data are still limited, and side effects such as nausea are common. Wed, 11 Feb 2026 10:01:13 EST https://www.sciencedaily.com/releases/2026/02/260211073033.htm https://www.sciencedaily.com/releases/2026/02/260208011017.htm Your gut is home to trillions of bacteria that constantly “sense” their surroundings to survive and thrive. New research shows that beneficial gut microbes, especially common Clostridia bacteria, can detect a surprisingly wide range of chemical signals produced during digestion, including byproducts of fats, proteins, sugars, and even DNA. These microbes use specialized sensors to move toward valuable nutrients, with lactate and formate standing out as especially important fuel sources. Sun, 08 Feb 2026 15:56:24 EST https://www.sciencedaily.com/releases/2026/02/260208011017.htm https://www.sciencedaily.com/releases/2026/02/260207092904.htm A major study suggests menopause is linked to changes in brain structure, mental health, and sleep. Brain scans revealed grey matter loss in areas tied to memory and emotional regulation, while many women reported increased anxiety, depression, and fatigue. Hormone therapy did not reverse these effects, though it may slow age-related declines in reaction speed. Researchers say menopause could represent an important turning point for brain health. Sat, 07 Feb 2026 09:52:48 EST https://www.sciencedaily.com/releases/2026/02/260207092904.htm https://www.sciencedaily.com/releases/2026/02/260206012226.htm Researchers have discovered a previously unknown enzyme that plays a crucial role in fat production. By blocking it, they stopped weight gain, reduced liver damage, and lowered harmful cholesterol levels in animal studies. The finding opens the door to a new kind of medication that could tackle obesity, fatty liver disease, and cardiovascular disease all at once. Fri, 06 Feb 2026 11:27:35 EST https://www.sciencedaily.com/releases/2026/02/260206012226.htm https://www.sciencedaily.com/releases/2026/02/260204121547.htm People who switch to a fully unprocessed diet don’t just eat differently—they eat smarter. Research from the University of Bristol shows that when people avoid ultra-processed foods, they naturally pile their plates with fruits and vegetables, eating over 50% more food by weight while still consuming hundreds fewer calories each day. This happens because whole foods trigger a kind of built-in “nutritional intelligence,” nudging people toward nutrient-rich, lower-calorie options. Thu, 05 Feb 2026 10:04:34 EST https://www.sciencedaily.com/releases/2026/02/260204121547.htm https://www.sciencedaily.com/releases/2026/02/260203030551.htm Popular weight-loss drugs like Ozempic and Wegovy can dramatically curb appetite, but experts warn many users are flying blind when it comes to nutrition. New research suggests people taking these medications may not be getting enough guidance on protein, vitamins, and overall diet quality, increasing the risk of muscle loss and nutrient deficiencies. Wed, 04 Feb 2026 10:43:08 EST https://www.sciencedaily.com/releases/2026/02/260203030551.htm https://www.sciencedaily.com/releases/2026/01/260131082433.htm Lowering salt in everyday foods could quietly save lives. Researchers found that modest sodium reductions in bread, packaged foods, and takeout meals could significantly reduce heart disease and stroke rates in France and the U.K. The key advantage is that people would not need to alter their eating habits at all. Small changes to the food supply could deliver large, long-term health benefits. Sat, 31 Jan 2026 09:27:42 EST https://www.sciencedaily.com/releases/2026/01/260131082433.htm https://www.sciencedaily.com/releases/2026/01/260130041056.htm Men start developing heart disease earlier than women, with risks rising faster beginning around age 35, according to long-term research. The difference is driven mainly by coronary heart disease, not stroke or heart failure. Traditional risk factors explain only part of the gap. The findings suggest earlier screening could help catch problems before serious damage occurs. Fri, 30 Jan 2026 10:52:51 EST https://www.sciencedaily.com/releases/2026/01/260130041056.htm