Category: 8. Health

  • Can potassium supplements help lower the risk of heart failure?

    Can potassium supplements help lower the risk of heart failure?

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    Maintaining high blood potassium levels, for instance, by taking supplements, may help lower heart failure risk. Image credit: Viktoriya Skorikova/Getty Images
    • A new trial investigating high-normal serum potassium levels for people at high risk of ventricular arrhythmias delivered promising results.
    • Compared to a control group, people with these elevated potassium levels fared better over the approximately 3 years of the trial.
    • Too little potassium is bad for the heart, and so is too much. The trial suggested a new sweet spot for at-risk heart patients.

    The study, conducted at three sites in Denmark, was called the POTCAST trial, for “Targeted Potassium Levels to Decrease Arrhythmia Burden in High-Risk Patients with Cardiovascular Diseases.”

    The trial tracked for 3.3 years the cardiovascular health of participants maintaining high-normal potassium levels compared to a control group whose potassium levels were not being treated.

    This was done by measuring the incidence of specific cardiovascular events: sustained ventricular tachycardia, necessary life-saving ICD therapy, unplanned hospitalization of greater than 24 hours for arrhythmia or heart failure, or death from any cause.

    By the end of the trial, just 22.7% of study participants with high-normal potassium levels had experienced one of these events, compared to 29.2% of individuals in the untreated group.

    Specifically, just 15.3% of high-normal potassium individuals experienced a ventricular tachycardia event or required ICD therapy, compared to 20.3% of the normal potassium participants, while for the untreated group, 10.7% required hospitalization for arrhythmia, compared to 6.7% of those in the high-normal group.

    There were no significant differences between the groups regarding the incidence of hospitalization for hyperkalemia (overly high potassium levels) or hypokalemia (overly low potassium levels).

    The target potassium level for the high-normal group in the study was 4.5-5.0 mmol/L (millimoles per liter). The average potassium level of participants at the baseline was 4.01 mmol/L.

    The trial aimed to identify an increased level of potassium that was high enough to aid heart function without being so high as to cause damage.

    Members of the high-normal group received mineralocorticoid receptor antagonists and/or potassium supplements, as well as dietary guidance to increase their serum potassium to the target level over a period of 85 days.

    They had also reduced or completely discontinued any current use of potassium-losing diuretics.

    “Normal serum potassium levels are critical to maintaining the electrical stability of the heart,” Roy Ziegelstein, MD, of DynaMed at EBSCO Clinical Decisions, not involved in this study, told Medical News Today. “In fact, either low or high potassium levels can cause unstable heart rhythms.”

    Jayne Morgan, MD, cardiologist and the Vice President of Medical Affairs for Hello Heart, likewise not involved in this study, explained that:

    “This is because cardiac action potentials depend on potassium gradients between the inside and outside of the heart muscle cells. This controls repolarization.”

    The fact that participants in the trial all had cardioverter defibrillators made them especially sensitive to the electrical effects of potassium levels, said Ziegelstein, “since their electrical system of their heart is already more vulnerable than those without a similar history.”

    The designers of this trial clearly hoped to identify a “good sweet spot” for potassium levels, as suggested by panelist Theresa McDonagh, MD, of King’s College London during the trial results’ presentation at the European Society of Cardiology Congress.

    “Low levels also can create a risk of arrhythmias, just as high levels can,” said Morgan. “This includes superventricular tachycardia, torsades de pointes, and even cardiac arrest in severe cases. Levels below 2.5 mmol/L carry a severe risk level, with levels between 2.5-2.9 mmol/L carrying a moderate risk level.”

    Too-high potassium levels pose perhaps the most profound danger, she said.

    “The most serious risk is the very thing that is trying to be avoided by increasing the potassium range, which are arrhythmias,” cautioned Morgan, “including ventricular fibrillation, and asystole [cessation of heart function].”

    Finally, she added, “In addition to ECG changes, nerve and/or muscle function can be impacted, including diaphragmatic weakness.”

    “This,” said Ziegelstein, “is something we must consider when recommending potassium supplements to patients, or when treating patients with other medications that may increase serum potassium levels.”

    Morgan termed the findings of the trial as “interesting,” and noted that they mirror the results of other studies.

    However, she said, “it is worth noting that the mortality benefit is not realized until year 4, and that the active arm included more patients with a greater time since ICD therapy by 22%,” implying they may have more completely recovered from previous events than the control group.

    “The comparison of human ancestral diets that were richer in potassium and lower in sodium is confounding, as the life expectancy was frequently less than 45 years ancestrally,” was another concern for Morgan.

    She noticed as well that: “There were also more hospitalizations for electrolyte issues (presumably hyperkalemia), signaling the importance of very close monitoring. There is a narrow therapeutic window. As such, the treatment can also be the detriment outside of the window.”

    Ziegelstein, too, expressed concern regarding the difficulty of tightly monitoring patients at higher potassium levels, noting that, “in this study, participants had blood tests performed every other week to make sure that their potassium was in the desired range and neither too high nor too low — this is often very difficult to do in routine clinical practice.”

    The bottom line is that people with cardiovascular disease who may be interested in investigating the possibility of upping their potassium levels should make sure to consult their cardiologist first.

    Do not increase your potassium levels yourself without proper medical guidance, given the potential risk involved, the experts MNT spoke to cautioned.

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  • LSD shows promise for reducing anxiety, shows drugmaker’s study

    LSD shows promise for reducing anxiety, shows drugmaker’s study

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    LSD reduced symptoms of anxiety in a mid-stage recent study, paving the way for additional testing and possible medical approval of a psychedelic drug that has been banned in the US for more than half a century.

    The results from drugmaker Mindmed tested several doses of LSD in patients with moderate-to-severe generalised anxiety disorder, with the benefits lasting as long as three months. The company plans to conduct follow-up studies to confirm the results and then apply for Food and Drug Administration approval.

    Beginning in the 1950s, researchers published a flurry of papers exploring LSD’s therapeutic uses, though most of them don’t meet modern standards.

    “I see this paper as a clear step in the direction of reviving that old research, applying our modern standards and determining what are the real costs and benefits of these compounds,” said Frederick Barrett, who directs Johns Hopkins University’s psychedelic centre and was not involved in the research.

    Psychedelic research is rebounding

    Psychedelics are in the midst of a popular and scientific comeback, with conferences, documentaries, books and medical journals exploring their potential for conditions like depression, anxiety and post-traumatic stress disorder.

    The FDA has designated psilocybin, MDMA and now LSD as potential “breakthrough” therapies based on early results.

    Still, the drugs have not had a glide path to the market.

    Last year, the FDA rejected MDMA — also known as ecstasy — as a treatment for PTSD, citing flawed study methods, potential research bias and other issues.

    The new LSD study, published by the Journal of the American Medical Association, addresses some of those problems.

    MDMA, like many other psychedelics, was tested in combination with hours of talk therapy by trained health professionals. That approach proved problematic for FDA reviewers, who said it was difficult to separate the benefits of the drug from those of therapy.

    The LSD study took a simpler approach: Patients got a single dose of LSD — under professional supervision, but without therapy — and then were followed for about three months.

    The paper does not detail how patients were prepared for the experience or what sort of follow-up they received, which is crucial to understanding the research, Barrett noted.

    “In many cases, people can have such powerful, subjective experiences that they may need to talk to a therapist to help them make sense of it,” he said.

    Anxiety eased, but questions remain

    For the study, researchers measured anxiety symptoms in nearly 200 patients who randomly received one of four doses of LSD or a placebo. The main aim was to find the optimal dose of the drug, which can cause intense visual hallucinations and occasionally feelings of panic or paranoia.

    At four weeks, patients receiving the two highest doses had significantly lower anxiety scores than those who received placebo or lower doses. After 12 weeks, 65 per cent of patients taking the most effective LSD dose — 100 micrograms — continued to show benefits and nearly 50 per cent were deemed to be in remission. The most common side effects included hallucinations, nausea and headaches.

    Patients who got dummy pills also improved — a common phenomenon in psychedelic and psychiatric studies — but their changes were less than half the size those getting the real drug.

    The research was not immune to problems seen in similar studies.

    Most patients were able to correctly guess whether they’d received LSD or a dummy pill, undercutting the “blinded” approach that’s considered critical to objectively establishing the benefits of a new medicine. In addition, a significant portion of patients in both the placebo and treatment groups dropped out early, narrowing the final data set.

    It also wasn’t clear how long patients might continue to benefit.

    Mindmed is conducting two large, late-stage trials that will track patients over a longer period of time and, if successful, be submitted for FDA approval.

    “It’s possible that some people may need retreatment,” said Dr. Maurizio Fava of Mass General Brigham Hospital, the study’s lead author and an adviser to Mindmed. “How many retreatments, we don’t know yet, but the long-lasting effect is quite significant”.

    Interest from the Trump administration

    Health Secretary Robert F. Kennedy Jr. and other administration officials have expressed interest in psychedelic therapy, suggesting it could receive fast-track review for veterans and others suffering psychological wounds.

    Generalised anxiety disorder is among the most common mental disorders, affecting nearly 3 per cent of US adults, according to the National Institutes of Health. Current treatments include psychotherapy, antidepressants and anti-anxiety drugs like benzodiazepines.

    The possibility of using LSD as a medical treatment isn’t new.

    In the 1950s and 1960s, more than 1,000 papers were published documenting LSD’s use in treating alcohol addiction, depression and other conditions. But a federal backlash was in full swing by the late 1960s, when psychedelics became linked to counterculture figures like Timothy Leary, the ex-Harvard professor who famously promoted the drugs as a means to “turn on, tune in and drop out”.

    A 1970 law classifying LSD and other psychedelics as Schedule 1 drugs — without any medical use and high potential for abuse — essentially halted U.S. research.

    When a handful of nonprofits began reassessing the drugs in the 1980s and 1990s, they focused on lesser-known hallucinogens like MDMA and psilocybin, the main ingredient in magic mushrooms, to avoid the historic controversies surrounding LSD.

    “LSD was right there in front of everybody, but Mindmed is the first company that actually decided to evaluate it,” Fava said.

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  • Congo to vaccinate health workers, contacts amid ebola outbreak

    Congo to vaccinate health workers, contacts amid ebola outbreak

    The World Health Organization said it dispatched its experts alongside Congo’s Rapid Response Team to Kasai province to strengthen disease surveillance, treatment and infection prevention and control in health facilities. It is also delivering supplies including personal protective equipment, mobile laboratory equipment and medical supplies.

    Congo has a stockpile of treatments and of the Ervebo Ebola vaccine, WHO said.

    “We had previously prepositioned 2,000 doses of Ebola vaccine in Kinshasa, which we are releasing to vaccinate contacts and health workers,” said WHO chief Tedros Adhanom Ghebreyesus.

    It’s the 16th outbreak of Ebola in Congo, and Health Minister Samuel-Roger Kamba said the fatality rate, estimated at 53.6%, showed the gravity of the situation.

    The confirmed case was of a 34-year-old pregnant woman in the locality of Boulapé, in southern Kasai province. Research on the suspected cases was ongoing.

    “To date, the provisional report shows 28 suspected cases and 15 deaths, including 14 in Boulapé and 1 in Mweka, as well as four health care workers,” Kamba said.

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  • Experts warn of rising prostate cancer cases

    Experts warn of rising prostate cancer cases

    Prostate cancer remains underdiscussed in Greece despite its global toll, with more than 7,000 new diagnoses each year and 19 Greek men learning daily they have the disease, experts say. It is the second most common cancer among men in Europe, according to the World Health Organization.

    Globally, prostate cancer is the fifth leading cause of male cancer deaths, with 375,000 deaths annually and 1.5 million new cases. “Unfortunately, we lack reliable national data,” said oncologist Christos Christodoulou, who renewed calls for a comprehensive cancer registry.

    Specialists warn cases are rising. The American Cancer Society reported that while prostate cancer incidence fell 6.4% annually from 2007 to 2014, it has increased 3% per year since 2015, with advanced-stage diagnoses up nearly 5%. The aging population and lack of routine screening contribute to the trend.

    “Symptoms at early stages resemble benign prostate hyperplasia, so delays in diagnosis are common,” said Ploutarchos Anezinis, a urologist at the University of Crete. He advises men to start prostate checks, including PSA blood tests and physical exams, at age 50, or 45 with family history.

    PSA testing remains controversial due to false positives and negatives, but experts stress its role in guiding imaging and biopsy decisions. “PSA is the best tumor marker we have today,” Anezinis said.

    Biopsies, though uncomfortable and sometimes risky, remain crucial for confirming diagnoses and guiding treatment, doctors said. Advances in imaging have reduced unnecessary biopsies and complications.

    Prostate cancer often progresses slowly and treatments are effective, but Christodoulou cautioned against complacency: “It’s still a cancer diagnosis and requires serious care.”

    Oncologist Ilias Athanasiadis added: “My advice to all men is: For any symptom that persists, talk to your doctor. If cancer is found, you have the advantage of early diagnosis. The decision not to know is personal, but knowledge is power…” 


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  • Is It Healthy to Eat the Same Breakfast Every Day?

    Is It Healthy to Eat the Same Breakfast Every Day?

    • Dietitians say that repeating breakfast can be part of a healthy diet.
    • Eating the same breakfast can reduce decision fatigue and make mornings easier.
    • Mix up other meals and snacks to meet your nutrient needs.

    The average person makes around 35,000 decisions each day—yes, that many. From the moment you wake until your head hits the pillow, you’re constantly making decisions on daily tasks and events, like what to wear, how to respond to emails and what to eat. All these choices can lead to decision fatigue, leaving you feeling drained. That’s why many of us find ourselves wearing and eating the same things often because it’s one less decision to make. 

    When it comes to choosing meals, breakfast tends to be the one we repeat the most. This makes sense, since mornings can be hectic, and having a go-to breakfast option makes busy mornings a little easier. But is it actually healthy to eat the same breakfast every day? Here’s what dietitians say about being a breakfast repeater. 

    Pros of Eating the Same Breakfast Every Day

    It Reduces Decision Fatigue 

    “Sticking to the same breakfast each day can reduce decision fatigue,” says Sapna Peruvemba, M.S., RDN, a registered dietitian. With breakfast already planned, you can conserve the energy you’d normally spend on deciding what to eat for breakfast for more important stuff. Plus, some people actually look forward to having the same daily breakfast. “It offers a sense of routine, which can be comforting—especially for those who enjoy structure in their mornings,” she adds. Another win? Making the same thing for breakfast can simplify your grocery list, cutting down on even more decision-making.

    You Stick to Something That Works for You

    As the saying goes, “If it’s not broken, don’t fix it.” This can apply to your favorite breakfast too. “When my clients find a breakfast that works for them, I recommend they stick to it as many days a week as possible,” says Melissa Mitri, M.S., RD. “Everyone is different, and so once you find that breakfast that is satisfying, balanced and provides long-lasting energy, it makes sense to stick to it or at least some variation of it.” For some, that might mean whipping up a daily smoothie. For others, a veggie-filled egg scramble is their top breakfast pick. “This takes the guesswork out of your first meal, which can profoundly impact your day in a positive way,” explains Mitri.

    Starts Your Day Off Right

    Even if you’re having the same thing every day, a well-balanced breakfast can set the tone for making healthier choices the rest of the day. “If it’s a healthy breakfast (e.g., rolled oats and fruit, or eggs with whole-grain toast), you’ve gotten your day off to a good start,” says Lisa Andrews, M.Ed., RD, LD. The key is making sure that your staple breakfast provides an optimal balance of protein, carbohydrates and healthy fats for sustained energy that will power you through the whole morning. Having a balanced breakfast can also give you a head start on meeting the daily recommendations for essential nutrients like folate, vitamin C and calcium. 

    Cons of Eating the Same Breakfast Every Day

    It Can Get Boring

    “While eating the same breakfast every day may work for some people, others may get bored eating in this way,” says Mitri. She adds that this breakfast monotony could potentially derail your health goals: “Boredom may lead to dissatisfaction with your meals or cravings later on because you’re yearning for more variety.” If you find yourself in a breakfast rut, it may be time to switch things up. 

    You May Miss Out on Important Nutrients

    Missing out on a variety of nutrients is another drawback to being a breakfast repeater. “Eating the same breakfast every day limits the number of nutrients in that meal. Because of this, you may risk missing out on other essential nutrients that you would otherwise get if you had more of a variety of breakfast options in your rotation,” says Mitri. 

    Your gut health depends on meal variety too. “Your gut microbiome thrives on dietary diversity, so too much repetition might not be ideal—though this can be balanced out by varying your other meals,” explains Peruvemba. 

    The Final Verdict

    Good news—dietitians agree that sticking to a go-to breakfast isn’t inherently a bad thing. To make the most of your breakfast, consider these tips: 

    • Choose Savory Rather Than Sweet. When deciding on your staple breakfast, Andrews suggests opting for savory options like eggs or frittata versus sweet ones like muffins or waffles. “This may help curb your sweet tooth for the rest of the day and give you more energy in the morning,” she says.
    • Add Some Protein. In addition to keeping you full, eating a protein-rich breakfast has other perks. “Protein at breakfast was found to keep blood sugar levels lower at lunch and dinner, according to a small study in healthy adults,” says Andrews. There’s also evidence that eating a protein-rich breakfast may support heart health, such as better blood pressure regulation and HDL (“good”) cholesterol, she adds.
    • Don’t Forget About Fiber. Picking a high-fiber breakfast to repeat helps you get closer to the daily fiber goal of 25 grams for women and 38 grams for men—a goal most people fall short of. “Include foods that are high in both protein and fiber to help regulate blood sugar and your appetite. A veggie omelet with whole-grain toast and fresh or frozen fruit is an ‘eggscellent’ way to start your day,” says Andrews.
    • Add Variety the Rest of the Day. If you like to eat the same thing in the morning, make sure that you are covering all of your nutrition bases by eating more variety at lunch, dinner and snacks. “Balance out the routine by including a wide variety of nutrient-dense foods in your other meals throughout the day,” says Peruvemba.
    • Switch Up Some Ingredients. ”If you like the same breakfast every day, you can still stick to the same general ‘formula,’ while rotating some of the ingredients,” says Mitri. “For example, if [you eat] overnight oats every morning, you can mix the ingredients up every few days, such as the type of fruit you add in, other toppings like nuts or seeds, or rotate different nut butters like almond, peanut or sunflower. Doing this allows you to enjoy the same overall meal while maintaining variety in nutrient content and flavor.”

    Our Expert Take

    Whether it’s a favorite smoothie, overnight oats or scrambled eggs and toast, many of us have at least one go-to breakfast that we make again and again. Dietitians agree that if it works for you, there’s no need to change things up—especially if it’s a breakfast that offers plenty of filling fiber and protein. The one caveat is that you’ll want to plan a bit of variety in the rest of your meals so that you aren’t missing out on any key nutrients. To prevent boredom, you can also add interest to your staple breakfast by switching out toppings or mix-ins rather than picking something entirely new. If deciding what to eat each morning feels exhausting, make one final decision: stick to the same breakfast.

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  • Cancer symptoms every woman should watch out for

    Cancer symptoms every woman should watch out for

    Every woman deserves to know what her body is trying to tell her – especially if and when those signals could be early signs of some complex disease. Whether it’s heart health, bone health, or even cancer.

    Contrary to popular belief, cancer affects women of all ages. Despite its prevalence, many early signs are silent or easily mistaken for everyday issues. From subtle digestive changes to unexplained fatigue or abnormal bleeding, knowing what to look for can save lives.

    In fact, experts stress that women should be particularly vigilant about symptoms that linger for more than two to three weeks, especially lumps, unusual discharge, persistent bloating, or unexplained weight loss, because these can signal serious conditions like breast, ovarian, cervical, or endometrial cancer. Recent warnings from oncologists highlight common, often dismissed symptoms: persistent abdominal bloating, irregular bleeding, nipple or breast changes, pelvic or back pain, and chronic fatigue, signs that may point toward cancers such as ovarian, uterine, cervical, or blood cancers.

    By trusting these signals and acting early, women can significantly improve their chances of early detection and successful treatment. Because awareness of even very subtle, yet persistent changes can make all the difference. And awareness, paired with timely medical attention and screenings, provides the best defense.

    In this carefully curated guide, we’ll break down key symptoms women should not ignore, explain why they matter, and offer guidance on when to see a doctor.


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  • NYU Langone strengthens world-leading GI cancer program with renowned leaders

    NYU Langone strengthens world-leading GI cancer program with renowned leaders

    NYU Langone Health’s Perlmutter Cancer Center announces the arrival of acclaimed cancer leaders Anirban Maitra, MD, and Manuel Hidalgo, MD, as co-directors of a new Gastrointestinal (GI) Cancer Center. This marks a milestone in its mission to develop a world-leading GI cancer program with a tightly integrated research and clinical platform focused on translating research into new treatments for GI cancer patients.

    Dr. Maitra is a world-renowned physician-scientist whose work has widely influenced the field of pancreatic cancer research, from early detection and biomarker development to tumor microenvironment and early cancer interception strategies. He is also a leading gastrointestinal and pancreatic pathologist, and at NYU Langone, he will be working with the Department of Pathology to develop programs in spatial biology, molecular diagnostics, and tissue-based analytics. At Perlmutter Cancer Center, Dr. Maitra will serve as both co-director of the GI Cancer Center and associate director of translational research, where he will lead efforts to drive discovery from the lab to the clinic across multiple disease areas.

    “We are positioned well at Perlmutter Cancer Center to create a truly world-class GI Cancer Center,” said Dr. Maitra. “The integrated nature of this institution gives us so much opportunity to turn what we do at the lab bench into tangible treatments, developing both our understanding of these cancers, and our ability to improve outcomes for our patients.”

    Dr. Hidalgo is a highly respected translational researcher and clinical oncologist, having done internationally recognized work in anticancer drug development. He has led early clinical development of more than 50 novel agents that have changed the standard of care for patients with advanced cancers. Having pioneered the use of patient-derived xenografts, which use a sample of a patient’s tumor to develop the best course of treatment, Dr. Hidalgo’s work bridges laboratory discoveries with clinical application. At Perlmutter Cancer Center, he will focus on building robust infrastructure for therapeutic development, investigator-initiated trials, and biomarker-driven studies.

    “I am honored to join Perlmutter Cancer Center and help lead the development of this ambitious GI Cancer Center alongside Dr. Maitra,” said Dr. Hidalgo. “The vision behind this initiative is to facilitate collaboration between existing expertise at NYU Langone Health to address the needs of our community of patients.”

    Dr. Maitra and Dr. Hidalgo have collaborated with each other in the past to develop a successful pancreatic cancer center earlier in their careers. We are tremendously excited that their reunion at NYU Langone will see them building a GI Cancer Center that partners with our multidisciplinary teams of incredible surgical oncologists, radiation oncologists, medical oncologists, gastroenterologists, and researchers to accelerate scientific discovery into tangible treatments for our patients.”


    John P. Leonard, MD, chief of the Division of Hematology and Medical Oncology at NYU Grossman School of Medicine and director of the Center for Blood Cancers at Perlmutter Cancer Center

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  • Ultrasound device enables precise non-invasive stimulation of deep brain regions

    Ultrasound device enables precise non-invasive stimulation of deep brain regions

    An ultrasound device that can precisely stimulate areas deep in the brain without surgery has been developed by researchers from UCL and the University of Oxford, opening up new possibilities for neurological research and treatment of disorders such as Parkinson’s disease.

    Scientists have long been looking for a way to modulate brain function, which could improve our understanding of how the brain works and help to treat neurological diseases, using non-invasive methods that don’t involve surgery.

    One technology that could help is transcranial ultrasound stimulation (TUS), which was recently discovered to be able to modulate the activity of neurons (the brain’s key communication cells) by delivering gentle mechanical pulses that influence how these cells send signals.

    But to date current systems have struggled to reach deeper areas of the brain with sufficient precision to target specific brain structures. Conventional TUS systems often affect broader regions than intended, limiting their utility for targeted neuromodulation.

    The study, published in Nature Communications, introduces a new ultrasound device capable of influencing deep brain regions without surgery for the first time, targeting areas around 1,000 times smaller than conventional ultrasound devices can pinpoint and 30 times smaller than previous deep brain ultrasound devices.

    The new technology features 256 elements configured within a special helmet to send focused beams of ultrasound to specific parts of the brain in order to turn neuronal activity up or down. It also includes a soft plastic face mask which helps to target the ultrasound waves more precisely by keeping the head still.

    The research team demonstrated the system’s capabilities on seven human volunteers by targeting a part of the thalamus, a small structure in the centre of the brain that helps to relay sensory and motor information, called the lateral geniculate nucleus (LGN). The LGN is involved in processing visual information.

    In the first experiment, participants looked at a flashing checkerboard, which sent signals to the brain through the eyes. During stimulation with the ultrasound device, a functional magnetic resonance imaging (fMRI) scan showed significantly increased activity in the participants’ visual cortex, confirming precise targeting of the LGN.

    A second experiment revealed sustained decreases in visual cortex activity for at least 40 minutes after ultrasound stimulation, highlighting the system’s potential for inducing lasting changes in brain function.

    Though participants did not consciously perceive any changes in what they were seeing during the experiments, the brain scans revealed significant changes in neural activity. The ultimate goal is to harness these effects to produce clinically beneficial outcomes, such as stopping hand tremors.

    This advance opens up opportunities for both neuroscience research and clinical treatment. For the first time, scientists can non-invasively study causal relationships in deep brain circuits that were previously only accessible through surgery.


    Clinically, this new technology could transform treatment of neurological and psychiatric disorders like Parkinson’s disease, depression, and essential tremor, offering unprecedented precision in targeting specific brain circuits that play key roles in these conditions.


    The ability to precisely modulate deep brain structures without surgery represents a paradigm shift in neuroscience, offering a safe, reversible, and repeatable method for both understanding brain function and developing targeted therapies.”


    Professor Bradley Treeby, senior author of the study from UCL Medical Physics and Biomedical Engineering

    In addition to its research applications, the system could pave the way for new clinical interventions. Deep brain stimulation (DBS), currently used to treat conditions like Parkinson’s disease, requires invasive surgery and carries associated risks. The new ultrasound system offers a non-invasive alternative with comparable precision, potentially allowing clinicians to test areas of the brain that could be used to treat disease before surgery or even replace surgical approaches altogether.

    Recognising this clinical potential, several members of the research team have recently founded NeuroHarmonics, a UCL spinout company developing a portable, wearable version of the system. The company aims to make precise, non-invasive deep brain therapy accessible for both clinical treatment and broader therapeutic applications.

    Dr Eleanor Martin, first author of the study from UCL Medical Physics and Biomedical Engineering, said: “We designed the system to be compatible with simultaneous fMRI, enabling us to monitor the effects of stimulation in real time. This opens up exciting possibilities for closed-loop neuromodulation and personalised therapies.”

    The researchers emphasise that further studies are needed to fully understand the mechanisms underlying TUS-induced neuromodulation. However, the results mark a significant milestone in the development of safe, effective, and targeted brain stimulation technologies.

    Dr Ioana Grigoras, a first author of the study from the Nuffield Department of Clinical Neurosciences, University of Oxford, said: “This novel brain stimulation device represents a breakthrough in our ability to precisely target deep brain structures that were previously impossible to reach non-invasively. We are particularly excited about its potential clinical applications for neurological disorders like Parkinson’s disease, where deep brain regions are especially affected.”

    The study was supported by the Engineering and Physical Sciences Research Council (EPSRC), Wellcome, and the NIHR Oxford Health Biomedical Research Centre.

    Source:

    University College London

    Journal reference:

    Martin, E., et al. (2025). Ultrasound system for precise neuromodulation of human deep brain circuits. Nature Communications. doi.org/10.1038/s41467-025-63020-1

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  • A Weighty Crisis

    A Weighty Crisis

    The revelation that over 100 million Pakistanis are overweight ought to ring alarm bells across every policymaking corridor in the country. This is not merely a matter of individual health choices; it is a national crisis unfolding in slow motion. The link between obesity and chronic diseases such as diabetes, cardiovascular illness, and hypertension is well-documented, and these conditions are already stretching our fragile healthcare system to its limits.

    We must recognise that this is not an issue to be shrugged off as lifestyle indulgence. The economic consequences are stark: a population plagued with chronic illness cannot be productive, which directly hampers national growth. Rising healthcare costs will only add to the burden, particularly for vulnerable households already struggling to cope with inflation. If the young are unhealthy today, the workforce of tomorrow will be weaker, and less competitive on the global stage. That is not an abstract fear; it is a practical calculation we ignore at our peril.

    It is high time the state treated this as a public health emergency. Tackling the crisis requires a two-fold approach: systemic measures and mass awareness. On one hand, we need urban planning that encourages physical activity, regulation of processed food industries, and stronger healthcare interventions for early prevention. On the other hand, awareness campaigns must confront cultural attitudes that normalise sedentary lifestyles and poor diets. Relying solely on individual willpower will achieve little when the environment is stacked against healthier choices.

    The urgency of this matter needs to be acknowledged before the crisis deepens further. Pakistan cannot afford to carry the weight—literally—of neglect.


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  • WHO expands essential medicines lists with new cancer and diabetes treatments

    WHO expands essential medicines lists with new cancer and diabetes treatments

    Today, the World Health Organization (WHO) has released updated editions of its Model Lists of Essential Medicines (EML) and Essential Medicines for Children (EMLc), adding new treatments for various types of cancer and for diabetes with associated comorbidities such as obesity. Medicines for cystic fibrosis, psoriasis, haemophilia and blood-related disorders are among the other additions.

    WHO EML and EMLc include medicines for priority health needs of populations. They are adopted in over 150 countries, serving as a basis for public sector procurement, supply of medicines and health insurance, reimbursement schemes. The revisions mark the 24th edition of WHO EML and 10th edition of EMLc.

    The new editions of essential medicines lists mark a significant step toward expanding access to new medicines with proven clinical benefits and with high potential for global public health impact.”


    Dr. Yukiko Nakatani, Assistant Director-General for Health Systems, Access and Data

    Launched in 1977 largely to promote better access to medicines in developing countries, the WHO Model Lists have become a trusted global policy tool for decisions related to the selection and universal coverage of medicines within all health systems.

    The WHO Expert Committee on the Selection and Use of Essential Medicines reviewed 59 applications, including 31 proposals for the addition of new medicines or medicine classes. As a result, 20 new medicines were added to the EML and 15 to the EMLc, along with new use indications for seven already-listed products. The updated lists now include a total of 523 essential medicines for adults and 374 for children, reflecting the most pressing public health needs.

    Cancer medicines

    Cancer is the second leading cause of death globally, claiming nearly 10 million lives each year and responsible for almost one in three premature deaths from noncommunicable diseases. Cancer treatments have been a major focus of the WHO EML for the past decade. With cancer medicines accounting today for about half of all new drug approvals by regulatory agencies, the Expert Committee applies rigorous criteria to recommend only those therapies that offer the greatest clinical benefit. As a result, few approved cancer medicines are included – only those proven to prolong life by at least 4-6 months.

    Seven applications encompassing 25 cancer medicines were evaluated. As part of broader efforts to reduce inequities in cancer care, the Committee recommended increasing access to PD-1/PD-L1 immune checkpoint inhibitors, a class of immunotherapy medicines that help the body’s immune system recognize and attack cancer cells more effectively. Pembrolizumab was added to the EML as a first-line monotherapy for metastatic cervical cancer, metastatic colorectal cancer, and metastatic non-small cell lung cancer. For the latter, atezolizumab and cemiplimab are included as therapeutic alternatives.

    The Committee also considered several expert-recommended strategies – highlighted in the cancer experts report – aimed at improving access to and affordability of cancer treatments. It endorsed evidence-based clinical and health system strategies, including dose optimisation approaches, to improve access. The Committee emphasized that while health system reforms require time and government action, clinical strategies can be implemented immediately to deliver faster benefits, especially in resource-limited settings.

    Medicines for diabetes and obesity

    Diabetes and obesity are two of the most urgent health challenges facing the world today. Over 800 million people were living with diabetes in 2022, with half going untreated. At the same time, more than 1 billion people worldwide are affected by obesity, and rates are rising especially fast in low- and middle-income countries. These two conditions are closely linked and can lead to serious health problems, including heart disease and kidney failure.

    The WHO Expert Committee reviewed strong scientific evidence showing that a group of medicines called glucagon-like peptide-1 (GLP-1) receptor agonists can help people with type 2 diabetes – especially those who also have heart or kidney disease – by improving blood sugar control, reducing the risk of heart and kidney complications, supporting weight loss, and even lowering the risk of early death.

    GLP-1 receptor agonists – semaglutide, dulaglutide and liraglutide – and the GLP-1/glucose-dependent insulinotropic polypeptide (GIP) dual receptor agonist (tirzepatide) have been added to the EML. They are used as glucose lowering therapy for adults with type 2 diabetes mellitus with established cardiovascular disease or chronic kidney disease and obesity (defined as body mass index (BMI) ≥ 30kg/m2). This provides clear guidance to countries on which patients can benefit most from these therapies.

    High prices of medicines like semaglutide and tirzepatide are limiting access to these medicines. Prioritizing those who would benefit most, encouraging generic competition to drive down prices and making these treatments available in primary care – especially in underserved areas – are key to expanding access and improving health outcomes. WHO will continue monitoring developments, support fair pricing strategies, and help countries improve access to these life-changing treatments.

    “A large share of out-of-pocket spending on noncommunicable diseases goes toward medicines, including those classified as essential and that, in principle, should be financially accessible to everyone,” said Deusdedit Mubangizi, WHO Director of Policy and Standards for Medicines and Health Products. “Achieving equitable access to essential medicines requires a coherent health system response backed by strong political will, multisectoral cooperation, and people-centred programmes that leave no one behind.”

    More details of the Expert Committee’s recommendations, describing the additions, changes and removal of medicines and formulations, and decisions not to recommend medicines are available in the Executive Summary here.

    Source:

    The World Health Organization

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