Comment

Comment by Dr. Krishna Kumari Challa 1 hour ago

Abdominal fat is linked to a higher risk of urinary incontinence in women

Stress urinary incontinence is characterized by involuntary urine leakage during everyday activities such as coughing, laughing, lifting heavy objects, or exercising. It's that urinary leakage that occurs when pressure inside the abdomen increases and the pelvic floor can't hold it in.
Although the condition is often associated solely with aging, it is not exclusive to older women. It happens to women of all ages, including very young women. These pelvic floor muscles are rarely exercised throughout life, and without proper training, they can become weak and lose function.

Higher amounts of abdominal, particularly visceral, fat are strongly associated with increased risk of stress urinary incontinence in women, independent of total body fat or BMI. Visceral fat may contribute through mechanical pressure on the pelvic floor and metabolic effects such as chronic inflammation, potentially weakening pelvic floor muscles. Pelvic floor muscle training remains the primary treatment.
The accumulation of fat in the abdominal region, especially visceral fat (fat that accumulates between organs), significantly increases the risk of stress urinary incontinence in women. A study conducted at the Federal University of São Carlos (UFSCar) in the state of São Paulo, Brazil, identified this region as the one most strongly associated with involuntary urine leakage, surpassing total body fat. The results are published in the European Journal of Obstetrics & Gynecology and Reproductive Biology and indicate that body fat distribution may be a more decisive factor than weight itself in explaining the condition.

The study results showed that women with higher amounts of body fat were more likely to experience incontinence. However, the main finding was the role of visceral fat. The presence of this type of fat increased the likelihood of stress urinary incontinence by about 51%.
There are two possible explanations. The first is mechanical. As visceral fat accumulates within the abdominal cavity, it increases pressure on the internal organs and overloads the pelvic floor, which is the structure responsible for supporting the bladder and controlling urine flow. Excess weight in this region creates constant strain. Over time, these muscles can become more fatigued and less efficient, the researchers explain.
The second mechanism is metabolic. Visceral fat does not merely function as an energy store; it is metabolically active and releases inflammatory substances that circulate throughout the body. This process can compromise muscle quality and reduce contractile capacity, including that of the pelvic floor muscles. It is low-grade chronic inflammation, which affects different tissues in the body. That can also contribute to muscle weakness.
Obesity is already recognized as a risk factor for urinary incontinence, along with aging, menopause, the number of pregnancies, and delivery conditions.
One of the main forms of treatment is strengthening the pelvic floor muscles through women's health physical therapy.

Ana Jéssica dos Santos Sousa et al, Which body region's fat accumulation increase the risk of stress urinary incontinence?, European Journal of Obstetrics & Gynecology and Reproductive Biology (2026). DOI: 10.1016/j.ejogrb.2026.114957

Comment by Dr. Krishna Kumari Challa 1 hour ago

How long does a transplanted heart last?

The average lifespan of a transplanted heart is approximately 10 years, though individual outcomes vary. Key factors influencing longevity include careful post-surgical monitoring, strict medication adherence, management of comorbidities, and maintaining a heart-healthy lifestyle. Multidisciplinary care and strong social support further improve recovery and long-term health.
Patients can take steps to reduce complication risk and support long-term heart health, including:

Managing comorbidities, like diabetes or high blood pressure
Taking all medications as prescribed
Attending follow-up appointments with specialists
Maintaining a doctor-recommended, heart-healthy lifestyle

https://www.keckmedicine.org/blog/how-long-does-a-transplanted-hear...

Comment by Dr. Krishna Kumari Challa 1 hour ago

Parrots are not just mimicking words—they use proper names like humans to identify individuals
Analysis of vocalizations from over 880 captive parrots indicates that many parrots use names as labels to identify specific individuals, similar to human naming practices. Some parrots applied names to single individuals, while others used names for attention or in non-human-like ways. These findings suggest parrots possess cognitive and vocal abilities for flexible name use, though usage varies across species and individuals.

Name use by companion parrots, PLOS One (2026). DOI: 10.1371/journal.pone.0346830

Comment by Dr. Krishna Kumari Challa 1 hour ago

How a new technique will help us mine rare-earth metals with plants
Rare-earth metals are essential for many technologies. These are not actually rare, it's just that they are rarely found in high concentrations in the environment in their pure form.

A non-destructive fluorescence spectroscopy technique enables accurate detection and quantification of rare-earth elements, such as dysprosium, in plant tissues. This method allows repeated measurements on the same plant, optimizing plant-based extraction strategies for rare-earth metals from contaminated soils and informing optimal harvest timing to maximize yield. Preliminary results indicate applicability to other rare-earth elements.

Researchers have developed a technique for detecting and measuring the concentration of many rare-earth elements in plants, without destroying the plant. The technique can be used to optimize "plant mining" efforts, in which plants take up and concentrate these critical materials so that they can be harvested for practical use. The paper is published in the journal Plant Direct.
One option is to harvest the rare-earth elements found in mine waste and other polluted soils. However, while these toxic soils have relatively high concentrations of rare-earth elements compared to other soils, those concentrations are still too low to make this an economically feasible strategy.

But there is a potential solution: plants.

Some plant species are capable of taking rare-earth elements out of polluted soil and concentrating it in their tissue.
Researchers used fluorescence spectroscopy. The technique makes use of the fact that some chemical compounds absorb light and then re-emit that absorbed energy as light at different wavelengths. By cataloging which chemical compounds absorb and emit specific wavelengths, and how long those emissions last, you can determine which chemical compounds are present. Generally, the more intense the light emitted, the higher the concentration of the chemical compound.
For this project, the researchers focused on dysprosium, a rare-earth element that is critical for manufacturing everything from cell phones to wind turbines to electric vehicle motors.
The researchers focused on dysprosium, in part, because it fluoresces for a relatively long time. This means dysprosium will still be emitting light after the plant's autofluorescence has died down. That allows them to detect it, measure its intensity, and then calculate the concentration of dysprosium in the plant tissue.
The researchers demonstrated the technique using two species of pokeweed. The plants took up dysprosium from a substrate. The plant tissue was then treated externally with sodium tungstate, which interacts with the dysprosium to intensify the light being emitted by the dysprosium during fluorescence. The researchers then triggered fluorescence using a deep ultraviolet laser and measured the wavelengths and intensity of light emitted by the plant samples.
The researchers found their technique was accurate at both detecting the presence of dysprosium and measuring the concentration of dysprosium in the plant tissue.

Edmaritz Hernández‐Pagán et al, Detection and Quantification of Dysprosium in Plant Tissues, Plant Direct (2026). DOI: 10.1002/pld3.70164

Comment by Dr. Krishna Kumari Challa 1 hour ago

Large trial shows bone healing 'superpower' in children

Broken wrists are among the most common injuries in children, accounting for about half of children's fractures. Severely displaced distal radial fractures, where the bones move out of place, are often routinely treated with surgery. However—unlike adults—children have a remarkable ability to straighten broken bones, in a process called remodeling. Researchers questioned whether a plaster cast would achieve the same long-term result without exposing children to the risks of an operation.

In a major U.K. trial led by researchers at the University of Oxford, they found that most children with a severely broken wrist can be treated without surgery. The findings, published in The Lancet, suggest that a nonsurgical cast-first approach delivers similar long-term recovery while reducing the risks associated with surgery and costs.

These fractures can look very severe on an X-ray, which has traditionally led to surgery to straighten the bone. But because children's bones are still growing, they have a remarkable capacity to heal. Until now, there has been limited high-quality evidence on whether surgery was always necessary, say the researchers.

The CRAFFT trial (Children's Radius Acute Fracture Fixation Trial) recruited 750 children aged 4–10 from 49 hospitals across the U.K. Participants were randomly assigned to receive either surgical fixation or treatment with a plaster cast.

Patients were measured at regular intervals against a set of criteria. At three months, children who had surgery reported slightly better arm function, but the difference between groups was very small. By six and 12 months, there was no difference in recovery, suggesting that early advantages with surgery do not persist.

There were complications following surgery, including infections, scarring, and nerve irritation. Nonsurgical treatment, which avoids anesthesia and operative intervention, was shown to reduce NHS costs by around £1,600 per patient on average.

The trial was designed with input from families, who helped define what level of improvement would be meaningful enough to warrant surgery. The observed difference between treatments fell below this threshold.

Daniel C. Perry et al, Non-surgical casting versus surgical reduction for children with severely displaced distal radial fractures (the CRAFFT Study): a multicentre, randomised, controlled non-inferiority trial and economic evaluation, The Lancet (2026). DOI: 10.1016/S0140-6736(26)00409-5. www.thelancet.com/journals/lan … (26)00409-5/fulltext

Comment by Dr. Krishna Kumari Challa 1 hour ago

MRI data confirm shared brain signatures of mental health disorders

Over 1 billion people worldwide are living with one or more mental health disorders that affect their mood, thinking processes and behavior, impacting their daily functioning to varying degrees. Identifying variations in the brain's structure and organization that are commonly linked with mental health disorders could help to devise more effective tools to diagnose these conditions or create personalized treatment plans.

Researchers recently analyzed thousands of brain scans and medical records collected in Denmark to identify structural brain variations associated with mental health disorders. Their findings, published in Molecular Psychiatry, were aligned with some earlier observations, showing that mental health disorders were associated with a smaller thalamus and amygdala, larger ventricles and a thinner outer brain layer (i.e., cortex).

In Denmark, brain scans collected with a non-invasive imaging technique called magnetic resonance imaging (MRI) are linked to the electronic health records of the corresponding patients. This makes it easier for researchers to explore the connections between the structure of patients' brains and specific aspects of their clinical history.

The researchers observed specific variations in brain structure that were more prevalent in people diagnosed with mental health disorders. Most notably, they found that people with severe mental disorders presented a smaller thalamus, a smaller amygdala, larger ventricles (i.e., fluid-filled cavities at the center of the brain) and a thinner cerebral cortex.

Stefano Cerri et al, Cross-disorder comparison of brain structures among 4836 individuals with mental disorders and controls utilizing Danish population-based clinical MRI scans, Molecular Psychiatry (2026). DOI: 10.1038/s41380-026-03577-5.

Comment by Dr. Krishna Kumari Challa yesterday

High-salt diet linked to faster memory decline in men

Higher sodium intake is associated with faster episodic memory decline in men, but not in women, over a 72-month period. The findings suggest high-salt diets may negatively impact cognitive function, potentially through mechanisms involving brain inflammation, vascular damage, and reduced cerebral blood flow.

Francisca Chuwa et al, Higher sodium intake is associated with episodic memory decline in cognitively unimpaired older males: A 6-year longitudinal study, Neurobiology of Aging (2026). DOI: 10.1016/j.neurobiolaging.2026.02.003

Comment by Dr. Krishna Kumari Challa yesterday

People will get maximum benefits of exercise only if exercise timing is aligned with individual chronotype in adults

Timing exercise to match body clock chronotype—the natural predisposition to morning or evening alertness—may lower cardiovascular disease risk among those who are already vulnerable, suggests research published in the open access journal Open Heart.
Aligning exercise timing with individual chronotype in adults at cardiovascular risk led to greater improvements in blood pressure, metabolic markers, autonomic function, aerobic capacity, and sleep quality compared to mismatched timing. The effect was most pronounced in systolic blood pressure and sleep quality, especially among those with hypertension and morning chronotypes.
Chronotype alignment boosted sleep quality and lowered risk factors, such as high blood pressure, fasting glucose, and "bad" cholesterol, more effectively than mismatched exercise timing, the trial results indicate.

The findings prompt the researchers to suggest that individual chronotype assessment should be included in exercise prescriptions for those who are at risk of cardiovascular disease.

Exercise lowers the risks of heart disease/stroke and diabetes, and whether someone is naturally a morning lark or a night owl—an innate disposition that affects sleep-wake patterns, hormone secretion, and energy availability across the day—influences exercise performance and adherence, explain the researchers.
Analysis of the experimental results showed that cardiovascular disease risk factors, aerobic fitness, and sleep quality improved in both groups after 12 weeks.

But matching exercise with chronotype produced larger improvements in blood pressure, autonomic function (involuntary bodily processes, including heart rate), aerobic capacity, metabolic markers, and sleep quality than mismatched exercise.

These improvements were especially noticeable in sleep quality—an increase of 3.4 compared with 1.2 points—and systolic blood pressure—the higher of the two numbers in a reading.

This fell by 10.8 mm Hg in those whose exercise sessions had been matched to their chronotype compared with a drop of 5.5 mm Hg among those whose exercise sessions had been mismatched.

The fall in systolic blood pressure was even larger among those who had high blood pressure to begin with: their systolic blood pressure fell by an average of 13.6 mm Hg compared with 7.1 mm Hg in those whose exercise sessions had been mismatched.

Although improvements were observed across both chronotypes, overall, the effects were larger among morning larks than among night owls.

Chronotype-aligned exercise timing in middle-aged adults at cardiometabolic risk: a randomised controlled trial, Open Heart (2026). DOI: 10.1136/openhrt-2025-003573

Comment by Dr. Krishna Kumari Challa yesterday

Air pollution associated with increased migraine activity
Increased short-term and cumulative exposure to air pollution, particularly NO2 and PM2.5, is associated with higher rates of acute migraine episodes and increased use of migraine medications. Climate factors such as high temperatures and low humidity amplify these associations. The findings are based on hospital, clinic, and pharmacy data, primarily reflecting individuals with more severe migraine. Causality cannot be established.

Air pollution is associated with increased migraine activity.
• The study does not prove that air pollution causes migraine attacks; it only shows an association.
• Both short-term and cumulative exposure to air pollution were tied to increased migraine activity.
• Heat and humidity were also associated with increased activity.
• These findings could help predict when attacks may be more likely. People could stay indoors, use air filters and take preventive medications to help ward off attacks.

https://www.aan.com/PressRoom/Home/PressRelease/5333

Comment by Dr. Krishna Kumari Challa yesterday

Popular AI chatbots are confidently dispensing medical misinformation, analysis shows

Fifty percent of medical responses from five popular AI chatbots were problematic, with 20% highly problematic and 30% somewhat problematic, especially for open-ended prompts. Chatbots performed best on vaccines and cancer, worst on stem cells, athletic performance, and nutrition, and often provided confident but inaccurate or incomplete information with poor reference quality and difficult readability.

Generative artificial intelligence-driven chatbots and medical misinformation: an accuracy, referencing and readability audit, BMJ Open (2026). DOI: 10.1136/bmjopen-2025-112695

• ‹ Previous
• 1
• 2
• 3
• …
• 1217
• Next ›
• Page