Category: 8. Health

  • Chikungunya fever under preliminary control in S.China’s Guangdong as weekly cases fall to 1,387

    Chikungunya fever under preliminary control in S.China’s Guangdong as weekly cases fall to 1,387

    Local authorities in Foshan in South China’s Guangdong Province continue mosquito eradication efforts to control the chikungunya outbreak on July 29, 2025. Photo: VCG

    South China’s Guangdong Province has preliminarily brought its Chikungunya fever outbreak under control with 1,387 new cases reported over the past seven days, the Yangcheng Evening News reported on Sunday, down from close to 3,000 weekly new cases in previous two weeks. 

    The local infectious disease prevention and control authority said that the rapid rise in cases in Foshan, the core area of the outbreak, has been preliminarily curbed, and recent prevention and control gains have been further consolidated, said the report, citing Kang Min, director of the Institute for Prevention and Control of Infectious Diseases at the Guangdong Provincial Center for Disease Control and Prevention (Guangdong CDC).

    These new cases were mainly distributed across the province with 1,212 cases in Foshan, 103 cases in Guangzhou, 39 cases in Zhanjiang, according to the Guangdong CDC. 

    On Saturday, Foshan officials said at a press conference that the containment efforts have achieved initial results, the Yangcheng Evening News reported. 

    Wen Xi, a vice mayor of Foshan, said the daily number of new Chikungunya fever cases reported in the city fell to 148 cases on Friday, compared with 647 cases detected on July 19, the peak day. The number reported in the city has shown a steady decline since July 29, with the daily number of new cases reducing to below 200 over the past five consecutive days. 

    According to Kang, the mosquito density has significantly decreased and the transmission risk has been contained in the city thanks to multiple rounds of breeding site clearance and intensified mosquito control in affected areas, mosquito density in most outbreak-related villages and communities has noticeably dropped, greatly reducing the risk of community transmission. 

    However, since Chikungunya fever also has an incubation period, the effects of mosquito-control measures are not immediate and usually take one to two weeks to become apparent, prevention and control measures remain the most important to consolidate the results, Zhuang Shilihe, a Guangzhou-based medical expert, told the Global Times on Sunday. 

    Besides, while previous control measures have proven effective, as shown by declining case numbers, Guangdong’s long summer season and likely new water accumulation from typhoons mean the situation remains serious. Current measures must be maintained without complacency, and areas outside Foshan should also remain vigilant, Zhuang said.

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  • Cancer Is on the Rise in Younger Adults: What Is the Healthcare Industry Doing About It?

    Cancer Is on the Rise in Younger Adults: What Is the Healthcare Industry Doing About It?

    Cancer cases are becoming increasingly common among younger adults in the U.S. — a troubling trend that stakeholders all over the healthcare industry are working to reverse.

    Colorectal cancer in particular is appearing in increasingly younger patients, with the rate of diagnoses for this disease having risen by 15% in people ages 18 to 50 since 2004. The country’s overall five-year survival rate for colorectal cancer is slightly over half.

    Data shows us that cancers are appearing in Americans earlier than ever before. However, many younger people are missing out on their screenings, which can lead to later-stage diagnoses with worse outcomes. These low screening rates are mainly due to lack of awareness, cost barriers or feelings of anxiety or discomfort.

    To reduce cancer incidence in younger people, healthcare leaders recommend boosting access to early detection tests, as well as offering a variety of testing options. Some ways to do this include at-home testing, multi-cancer detection tests and expanding health plan benefits to cover more diagnostic services.

    Why providers are concerned

    In 2021, the U.S. Preventive Services Task Force (USPSTF) issued a new recommendation that colorectal cancer screening should start at age 45 instead of 50. 

    The USPSTF is a panel of experts who make recommendations on preventive health services like cancer screenings — at least for now. HHS Secretary Robert F. Kennedy is reportedly considering eliminating all 16 members of the USPSTF for being “too woke.” 

    The panel changed the recommended screening age in response to the trend of increasing colorectal cancer cases among younger adults. Data shows that nearly 10% of new colorectal cancer cases around the globe occur in people younger than 50.

    Over his two-decade-long career, Dr. Usman Shah — medical director of gastrointestinal oncology at Atlantic Health’s Overlook Medical Center in Summit, New Jersey — has observed a growing number of colorectal cancer cases in patients in their 30s and 40s. 

    While lowering the screening age to 45 is a step in the right direction, he emphasized that cases are increasingly appearing in even younger people.

    These patients often receive their diagnoses at later stages due to lack of screening, Dr. Shah added. Identifying colorectal cancer at a late stage versus an early stage can make a major difference — the five-year survival rate for stage I colorectal cancer in the U.S. is about 92%, whereas that percentage is just 12% for stage IV. 

    Dr. Shah pointed out that most colorectal cancer cases begin as premalignant polyps, which typically take seven to 10 years to become cancerous.

    “One of the things I always like to stress to my patients is that colonoscopies, in comparison to other forms of early screening and early detection, are not just early detection — it’s prevention. Because if you can remove that polyp when it’s in a pre-malignant state, you can avoid having it transform into malignancy,” he explained.

    While screening rates among young people are still pretty low, they are going up. Research shows that the share of U.S. adults ages 45 to 49 who are up to date on their colorectal cancer screening rose from 19.7% in 2021 to 33.7% in 2023. 

    To increase the rate of screening even more, Dr. Shah recommends that providers offer a variety of testing methods.

    “There are also less invasive methods of protection, whether that’s DNA-based assays or FIT tests. And I think you have to meet patients where they are — some patients are going to be much more amenable to a noninvasive test, one that can be done at home and then sent in. Other patients are going to want the more comprehensive evaluation, including that early prevention with polypectomies, with a colonoscopy,” he remarked.

    He also encouraged providers to have honest conversations with their patients about lifestyle changes they can adopt to lower their risk of developing cancer. In the case of colorectal cancer, there are known risk factors — such as regular consumption of red meat, processed food and alcohol — of which patients need greater awareness, Dr. Shah stated.

    For example, many patients need guidance on how to create a diet that is high in fiber, fruits and vegetables, as well as education about regular physical activity and maintaining a healthy weight can help reduce risk.

    Making testing more convenient

    Like Dr. Shah, Teal Health CEO Kara Egan also thinks it is important that patients have a variety of screening options. In May, Egan’s San Francisco-based startup received FDA approval for the first-ever at-home cervical cancer test, which gives patients an alternative to the in-office pap smear.

    Cervical cancer is another cancer that is increasingly prevalent in younger people. In the U.S., cervical cancer incidence among women ages 30 to 34 has grown by 2.5% per year from 2012 to 2019.

    Roughly 80% of women will get human papillomavirus (HPV) in their lifetime. For many, especially those who have gotten an HPV vaccine, the virus will go away on its own within two years. But for others, the infection could lead to cervical cancer. In fact, more than 90% of cervical cancer cases are caused by an HPV infection.

    Despite these figures, many women don’t get tested for HPV. CDC guidelines say that women should be tested regularly from ages 21-65 — yet only 1 in 4 women of screening age get screened. Not only do many women struggle to find access to this exam, but many patients find the method for HPV screening — most commonly known as a pap test or pap smear — to be uncomfortable and invasive.

    Teal’s screening device, called the Teal Wand, allows patients to self-collect a cervical sample and then send the sample to the lab. Once the sample is processed, Teal’s clinicians review the results, which are then shared with the patient via the startup’s telehealth platform.

    In addition to issues with access and comfort, there are also some problems regarding the average woman’s understanding of the procedure, Egan pointed out.

    “Pap smear is not to cervical cancer the way mammogram is to breast. Most people don’t really totally understand the pap smear — they don’t know what it’s really testing for. I think the more we can use the correct term — a cervical cancer screening — the more we elevate the importance of getting those visits done,” she stated.

    Egan also noted that most patients don’t realize that cervical cancer is almost entirely preventable when caught early through HPV screening.

    Teal began rolling out its product to consumers last month. As the company continues to conduct consumer outreach, its main goal is to remove patients’ fear and confusion — and to highlight that regular cervical cancer screenings equal less worry in the long term, she explained.

    The case for broader early detection

    It’s not just colorectal and cervical cancer rates that are increasing — other cancers, such as breast, pancreatic, kidney, prostate and uterine are also becoming more and more common among Americans under age 50.

    This has given way to multi-cancer detection tests, such as Grail’s Galleri test and Exact Sciences’ CancerSEEK test, noted SpotitEarly CEO Shlomi Madar. 

    SpotitEarly is an Israeli early cancer detection startup that launched in the U.S. in May. Its test uses AI and trained dogs to analyze patients’ breath samples, with the goal of detecting multiple types of cancer at their earliest stages.

    The startup’s test requires patients to breathe into what looks like an N95 mask for three minutes. After the sample is collected, SpotitEarly’s dogs use their snouts to sniff and detect cancer odor signatures found in a patient’s volatile organic compounds, which Madar described as “biological information from the blood in our lungs that travels into the air we exhale.” If a dog identifies cancer signatures in a sample, it will signal this to the lab by sitting next to it. 

    The test costs $250 for a single type of cancer and $500 for all four types SpotitEarly screens for: breast, colorectal, prostate and lung.

    Madar pointed out that in the U.S., patients’ rates of cancer screening uptake are usually alarmingly low, sometimes just a single-digit percentage. This is a shame because there is a positive trend in treatment innovations, such as immunotherapies and therapies that target the cancer microenvironment, he said.

    He believes that advances in cancer treatment have made early detection more valuable than ever, since effective therapies now exist for many cancers in their earliest stages.

    Madar also pointed out that most people don’t seek out all their recommended individual cancer screenings due to hurdles like cost, time, invasiveness and anxiety. A single, multi-cancer test is a more accessible option that could lead to better adoption, he argued.

    While there are some multi-cancer detection tests being ordered by doctors in the U.S., none have been approved by the FDA yet, Madar noted.

    The companies selling early cancer detection tests for multiple types of cancer in the U.S. are allowed to do so under Clinical Laboratory Improvement Amendments (CLIA) certification, not through FDA approval. 

    FDA approval means the agency has reviewed a test’s clinical trial data and confirmed it is safe and accurate for its intended use. CLIA certification, on the other hand, regulates the laboratory’s processes rather than the diagnostic itself. 

    Madar said he hopes the first FDA approval comes soon, as this will increase uptake of multi-cancer detection diagnostics.

    How payers can reduce barriers to screening

    Rhonda Randall, chief medical officer of UnitedHealthcare’s commercial business, thinks payers also play an important role when it comes to addressing Americans’ rising cancer rates.

    Last month, UnitedHealthcare announced new benefits for breast cancer and colorectal cancer detection for its commercial plan members. These benefits, which are slated to go into effect on January 1, will fully cover members’ first diagnostic imaging test for breast cancer, as well as their first colorectal cancer diagnostic test, no matter the patient’s age.

    Preventive screenings like mammograms and colonoscopies are typically done when no symptoms are present, and these are already usually covered by insurance. UnitedHealthcare’s announcement has to do with diagnostic tests, though. Providers use these to arrive at a specific diagnosis when patients have symptoms or abnormal screening results — and these often come with out-of-pocket costs for the member.

    “For breast cancer, for example, we know that for about 11% of people who go in for a mammogram, it results in an additional diagnostic image,” Randall said. “So when [the provider] sees something, they will want to get an additional image, and that is often billed as a diagnostic image — which, in the past, has resulted in additional costs for that member.”

    Similarly, Randall noted that nearly half of colonoscopies result in the identification of a polyp — which can cause the procedure’s classification to change from a preventive screening to a diagnostic test.

    By eliminating those costs for diagnostic tests, UnitedHealthcare is aiming to reduce care barriers and enable more timely diagnoses, Randall said.

    “Early stage cancers are much more treatable, and they have fewer side effects, a faster time to recovery and less time away from work. You can go through that checklist of good news when you catch something early,” she stated.

    With advances in diagnostic technology and greater attention being paid to early screening, there is real potential to reverse the trend of rising cancer incidence in younger populations. The experts interviewed for this article agreed that this objective will require ongoing collaboration between payers, providers and diagnostic companies.

    Photo: ST.art, Getty Images

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  • Israel reports 93 new measles cases, total at 410

    JERUSALEM, Aug. 10 (Xinhua) — The Israeli Health Ministry on Sunday reported 93 new diagnosed cases of measles, bringing the total in the current outbreak, which began in early April, to 410.

    The ministry estimated that, due to the high hospitalization rate and community reports, the number of infected people in the current outbreak in Israel ranges from 950 to 1,700.

    According to the ministry, the number of active diagnosed patients has increased from 120 to 162, including 22 currently hospitalized.

    Two of the hospitalized patients, a one-year-old baby and a toddler nearly two and a half years old, are currently receiving ECMO support in the intensive care unit.

    About a month after the outbreak, the ministry launched a nationwide vaccination completion campaign, and since then, more than 105,000 doses have been administered.

    Measles is an extremely contagious viral illness characterized by common symptoms, including fever, fatigue, runny nose, and a distinctive rash. In some cases, it can result in severe or potentially life-threatening complications.

    The ministry also reported a new case of West Nile fever in the southern city of Beer Sheva. This is the second confirmed case of the disease in Israel, following a diagnosis in central Israel in early June. Enditem

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  • Israel reports 93 new measles cases, total at 410-Xinhua

    JERUSALEM, Aug. 10 (Xinhua) — The Israeli Health Ministry on Sunday reported 93 new diagnosed cases of measles, bringing the total in the current outbreak, which began in early April, to 410.

    The ministry estimated that, due to the high hospitalization rate and community reports, the number of infected people in the current outbreak in Israel ranges from 950 to 1,700.

    According to the ministry, the number of active diagnosed patients has increased from 120 to 162, including 22 currently hospitalized.

    Two of the hospitalized patients, a one-year-old baby and a toddler nearly two and a half years old, are currently receiving ECMO support in the intensive care unit.

    About a month after the outbreak, the ministry launched a nationwide vaccination completion campaign, and since then, more than 105,000 doses have been administered.

    Measles is an extremely contagious viral illness characterized by common symptoms, including fever, fatigue, runny nose, and a distinctive rash. In some cases, it can result in severe or potentially life-threatening complications.

    The ministry also reported a new case of West Nile fever in the southern city of Beer Sheva. This is the second confirmed case of the disease in Israel, following a diagnosis in central Israel in early June.

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  • Sleep may amplify negative memory bias in anxious youth

    Sleep may amplify negative memory bias in anxious youth

    New research published in the Journal of Child Psychology and Psychiatry indicates that sleep may amplify the tendency for anxious children and young adolescents to overgeneralize negative experiences. In a controlled experiment, higher anxiety was linked to a greater chance of mistaking new but similar negative images for ones seen before—but only after a night’s sleep.

    The study was motivated by growing evidence that sleep shapes emotional memory. During sleep, the brain tends to reactivate and consolidate recent experiences, with emotionally charged material often receiving priority over neutral content. That bias can be adaptive, helping people learn from significant events. In anxiety, however, this same machinery may tilt toward negative material, feeding what researchers call negative overgeneralization—when a memory of one unpleasant event carries over to similar, harmless situations.

    Because late childhood and early adolescence are marked by heightened emotional responses, changing sleep patterns, and rising rates of anxiety, the team examined whether anxiety interacts with sleep to change how emotional memories are recognized and generalized during this period.

    “Our interest was sparked by a growing recognition that sleep plays a pivotal role in cognitive processes like memory consolidation, especially during critical neurodevelopmental periods such as early adolescence,” said study author Liga Eihentale, a doctoral student at Florida International University and member of the REMEDY research group.

    “Anxiety disorders often emerge during this time, and understanding sleep-dependent memory processes—such as overgeneralization—could shed light on early mechanisms driving psychopathology. By bridging cognitive neuroscience with clinical science, we aimed to explore how sleep interacts with anxiety to influence negative overgeneralization.”

    The researchers studied 34 participants between 9 and 14 years old, recruited from both clinical settings and the community to capture a broad range of anxiety severity. Anxiety was assessed with a clinician-rated measure. Participants were randomly assigned to either a sleep condition or a wake condition. Everyone completed an emotional memory similarity task. In the first phase, they viewed 145 images—negative, neutral, and positive—and rated each one’s emotional tone. They were not told there would be a later test.

    After a 10- to 12-hour interval, which included overnight sleep for one group and a daytime period of wakefulness for the other, participants took a surprise recognition test. That test included exact repeats of some images, new but similar “lure” images, and entirely new images. The main outcome was how often a participant labeled a similar-but-new negative image as “old,” adjusted for any general tendency to say “old.”

    Among children and young adolescents who slept, higher anxiety was linked to greater generalization of negative images—that is, a stronger tendency to believe that new but similar negative pictures had been seen before. This relationship did not appear in the wake group. The three-way interplay between anxiety, emotional tone, and condition was statistically significant for negative images, but not for neutral images. Positive images showed a weaker and less consistent pattern.

    Exploratory comparisons suggested that the effect was most pronounced at higher anxiety levels. Participants with high anxiety generalized negative memories substantially more after sleep than those with low anxiety. At the other end of the spectrum, participants with low anxiety sometimes generalized negative memories more after daytime wakefulness than after sleep, which hints that sleep may reduce negative generalization in less anxious individuals.

    “The key message is that sleep plays an active role in shaping memory and our perception of the world, particularly in emotionally vulnerable youth,” Eihentale told PsyPost. “Specifically, children and adolescents with higher levels of anxiety tend to overgeneralize negative experiences more after sleep compared to wakefulness, meaning they are more likely to extend negative associations to similar but non-threatening situations, which can perpetuate anxiety.”

    “Our findings underscore sleep’s key role in emotional memory processing during a sensitive developmental stage and point to the need for a deeper understanding of what is happening during sleep (i.e., sleep neurophysiology) in anxious youth to drive aberrant memory consolidation processes.”

    These findings align with theories proposing that sleep strengthens emotional memories and extend that idea to a pattern that may be maladaptive in anxiety. The data indicate that sleep-related memory consolidation could be one pathway through which negative overgeneralization takes hold in anxious children and young adolescents. That interpretation fits with broader work suggesting that the brain extracts the “gist” of experiences during sleep and integrates that gist into existing knowledge, which can be helpful in many situations but may become problematic when negative themes become dominant.

    This line of research also points toward potential clinical applications. If sleep can strengthen memory traces, it might be possible to guide that process toward more adaptive outcomes. Some experimental approaches cue specific memories during sleep to change how they are stored, and there is interest in testing whether such techniques could help reduce negative overgeneralization by reinforcing neutral or positive interpretations. The present findings indicate that such strategies might be especially relevant for children and young adolescents who show heightened anxiety.

    But anxiety severity did not meaningfully change recognition accuracy for negative images in either condition.

    “We were surprised to find that anxiety severity did not interact with sleep to predict recognition accuracy of negative images,” Eihentale said. “Emotional reactivity, which is often heightened in individuals with anxiety, is typically associated with better recognition of negative memories after sleep. However, in our clinical sample, this relationship did not hold—possibly due to differences in memory processing in clinical versus non-clinical populations. Perhaps more affirming, we found that at low levels of anxiety, sleep appeared to reduce negative generalization—highlighting a potential therapeutic effect of sleep in dampening the emotional intensity of negative memories in non-anxious youth.”

    The authors noted some limitations.

    “Our sample size was relatively small, which limits the statistical power and generalizability of the findings,” Eihentale noted. “We also relied on actigraphy and sleep diaries to assess sleep, which, while ecologically valid, do not capture the detailed neural processes—such as slow-wave activity and sleep spindles—that are integral to memory consolidation. Additionally, circadian factors and emotional arousal were not fully controlled or directly measured, which could have influenced memory encoding and retrieval. These limitations underscore the importance of replication using larger samples and more comprehensive, multimodal assessments of sleep.”

    Future studies could examine the sleep stages and brain rhythms most closely tied to emotional memory generalization, include larger and more diverse samples, and use image sets that are matched for arousal as well as content. It would also be useful to follow children and young adolescents over time to see whether sleep-related generalization of negative memories predicts later anxiety symptoms, or whether shifting sleep habits changes the tendency to generalize.

    “Our long-term goal is to map how sleep-related memory mechanisms contribute to the onset and persistence of anxiety in early adolescence,” Eihentale explained. “This includes investigating specific features of sleep microarchitecture—such as slow-wave activity and spindles—that are critical for memory formation and long-term storage. By identifying when and how overgeneralization becomes maladaptive, we aim to inform targeted sleep-based interventions that can disrupt these processes early and reduce the risk of chronic anxiety disorders.”

    The study, “Anxiety severity in peri-adolescents is associated with greater generalization of negative memories following a period of sleep relative to wake,” was authored by Liga Eihentale, Adam Kimbler, Nathan A. Sollenberger, Logan R. Cummings, Carlos E. Yeguez, Guadalupe C. Patriarca, Jeremy W. Pettit, Dana L. McMakin, and Aaron T. Mattfeld.

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  • Does dementia hit ‘smart’ people worse? Here’s what science says

    Does dementia hit ‘smart’ people worse? Here’s what science says

    Turns out, dementia does discriminate!You might’ve heard that being smart, having a high IQ, or years of education can be a blessing when it comes to dementia. In fact, elders are recommended to indulge more in brainy habits to keep cognitive decline at bay.However, the popular belief comes with a cruel twist.Yeah, it might sound like a head-scratcher, but science sure does have fascinating insights.Read on to know’em!

    Dementia and smart people: The intriguing link

    Being brainy might help you avoid dementia for longer, but if it does arrive, unfortunately, it could take you faster. That’s the surprising conclusion from the largest-ever study on the topic. Researchers found that people who spent more years in education or had more mentally demanding lives tended to decline more quickly after a dementia diagnosis.The team calls this the “cognitive reserve paradigm,” the idea that our brains can build a reserve of resilience through learning, problem-solving, and mental challenges like puzzles. This reserve can protect against symptoms for years, even when the disease is already damaging the brain.But here’s the twist: once the disease finally becomes noticeable, those with bigger reserves tend to be further along, leaving less time for treatment and, ultimately, shorter survival.

    Dementia (23)

    Cognitive reserve: The silent shield

    What exactly is it? Scientists talk about cognitive reserve, a term that describes how the brain adapts and compensates when faced with damage. It’s like a mental savings account built through education, mentally demanding jobs, and lifelong learning. People with higher reserve can walk through early brain changes without showing symptoms.In one early study, researchers found that some elderly people’s brains looked very damaged on the inside, yet they had no signs of dementia, thanks to high cognitive reserve.

    What does research say

    The research analysed 261 studies, including 36 looking at education levels. On average, people lived about 10.5 years after diagnosis. But for every extra year of education, life expectancy dropped by around 0.2 years, roughly two and a half months. That means someone graduating with a degree at 21 could, statistically, live a year less after diagnosis than someone who left school at 16.As reported by The Telegraph, researchers at Erasmus University Medical Centre in Rotterdam explained: “This paradigm postulates that people with higher education are more resilient to brain injury before functional declines. Once this reserve has been used up and dementia is diagnosed, however, these people are already at a more advanced stage of the underlying disease, and clinical progression will be faster.In other words, a sharper mind hides the damage for longer, but by the time symptoms show, the brain is already more affected.

    Dementia (25)

    Smartness delays, but doesn’t prevent

    The new findings don’t mean learning is dangerous for the brain. Research shows that intelligence and education grant a valuable head start, keeping cognitive function strong longer, even amid disease progression. That’s because individuals with higher reserve start with better functioning and have more buffer before symptoms appear.In fact, most research says the opposite: the more education and mental stimulation you have, the less likely you are to get dementia in the first place.Alzheimer’s Research UK urges people to keep challenging their minds: “Regularly challenging our brain and staying mentally active can help protect our brain health as we age, lowering our risk of memory and thinking problems and dementia,” the charity says.But once dementia sets in, it may feel like a steep slide downhill.

    Rapid decline in high-reserve individuals

    Here’s the bitter truth: Smarter people often decline faster once dementia symptoms emerge.Think of it like a landslide of a glacier. As per a study, education delayed the onset of memory decline, but once decline began, each extra year of schooling meant about a 4% faster drop in memory. Someone with a college degree might see half as much, again, a faster decline compared to someone with minimal education.

    Dementia (26)

    What’s the science behind reserve and decline

    Frontiers in Aging Neuroscience explored how cognitive reserve affects dementia progression. In people without signs of cognitive impairment, high reserve meant slower decline. But for those on the Alzheimer’s spectrum, high reserve was linked to a sharper drop once symptoms began, mirroring the pattern that scientists expect.Having said all that, it’s crucial to note that smartness doesn’t equal immunity; lifestyle still matters heavily when it comes to dementia. Even a strong reserve isn’t a guarantee against dementia. Lifestyle plays a huge role. In fact, the Lancet Commission identified modifiable risk factors, things you can actively change, that could prevent up to 40% of dementia cases. Social interaction, mental puzzles, regular exercise, healthy eating, and good sleep all help, not just to delay dementia, but also support brain strength across a lifetime.

    To sum it up…

    Yes, dementia can feel “worse” in people with higher intelligence, but only in the shape and pace of its progress. Smart people often stay sharp longer thanks to cognitive reserve, but that same reserve means dementia is diagnosed later, when the brain’s decline is more advanced. That’s why symptoms then appear steeper.The good news? Brain fitness, through learning, keeping active, socializing, and a healthy lifestyle, remains a powerful ally. Keep learning and challenging your brain, but also pay attention to early warning signs, no matter how sharp you think you are. In the end, lifelong mental and physical habits matter just as much as IQ.

    What’s the best things about India? We asked Mumbai and Delhi citizens


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  • Stress hormones keep an hourly rhythm, shaping mood and energy

    Stress hormones keep an hourly rhythm, shaping mood and energy

    Stress hormones do not surge in one long wave, they arrive in steady pulses that tick through the day and steer metabolism. A new study in mice and rats shows that the brain cells driving those pulses fire on an almost clock-like hourly schedule, even when no threat is in sight.

    Professor Karl Iremonger and colleagues at the University of Otago discovered the pattern by watching stress neurons glow in real time inside freely moving animals.


    Their findings link these hourly bursts to brief spikes in the stress hormone cortisol and to short bouts of wakefulness.

    Brain’s precise stress rhythm

    An ultradian rhythm repeats more than once in 24 hours, and cortisol follows that rule by spiking about 12 to 18 times each day in healthy adults.

    The team shows that corticotropin-releasing hormone (CRH) neurons in the paraventricular nucleus of the hypothalamus march in lockstep with that rhythm. They switch from quiet to active roughly every 60 minutes.

    Hourly pulses have been reported in blood samples for decades, yet skeptics argued they were a quirk of laboratory measurements. Direct brain recordings reveal a constant cell rhythm matching hormone patterns during both day and night.

    Such precision hints at an internal timer that is independent of the master circadian clock in the suprachiasmatic nucleus.

    Exactly how this shorter timer works remains an open question. Computer models suggest feedback loops between CRH cells and downstream adrenal signals could create a self-sustaining oscillator.

    Tracking animal stress pulses

    To peek inside a living brain without restraint, the researchers used fiber photometry. This technique delivers and collects light through a hair-thin optic cable.

    The team engineered CRH neurons to produce a calcium-sensitive fluorescent protein so that each burst of activity produced brief flashes detectable through the fiber.

    Light pulses were recorded continuously for up to three days while animals ate, slept, and explored. The signal rose sharply for a few minutes every hour, then faded – a pattern that mirrored hourly blips in the animals’ core temperature and movement.

    Because mice are nocturnal, bursts clustered during the night when the animals roamed, yet the hourly spacing never broke.

    That consistency allowed the team to predict upcoming activity peaks with simple statistics. This is a step toward forecasting stress reactivity in real time.

    Chemogenetic tools offered a second line of evidence. When the group artificially forced CRH neurons into an “on” state, resting animals snapped to attention and began frantic grooming within seconds.

    Stress bursts prompt sudden waking

    “These bursts of brain cell activity seem to act like a natural ‘wake-up’ signal and often lead to a rise in stress hormones, or cortisol,” said Iremonger.

    Each neural flare preceded a brief switch from quiet rest to alert scanning, suggesting the stress system doubles as a rapid response alarm that keeps animals ready for change.

    The optical recordings also showed that some hormone pulses followed the neural peaks while others did not. That mismatch implies additional checkpoints, perhaps in the pituitary or adrenal glands, that decide whether a neural warning should translate into a systemic hormone surge.

    Earlier work in the nucleus accumbens found that activating local CRH neurons can flip mice from sleep to wakefulness in milliseconds. Taken together, the evidence positions CRH cells as key players that manage both body chemistry and behavioral state.

    “Our new research is helping us to understand how the brain controls these normal rhythms of stress hormone release,” said Iremonger. Mapping that network could explain why some people feel alert at night or tired during the day.

    Hormones tied to mood disorders

    Chronic stress is a hallmark of depression, and many patients show overactive CRH signaling and flattened hormone rhythms.

    Drug developers have chased CRH receptor 1 blockers for years, and a recent structure-guided screen produced compounds that eased depressive behaviors in mice.

    Hourly brain pulses may be the physiological target those drugs must tame. If the rhythm turns erratic, patients could face unpredictable swings in energy, sleep, and emotion – a scenario often reported in mood disorders.

    Disrupted ultradian patterns also appear in adrenal insufficiency. Standard three-times-a-day steroid pills create long plateaus instead of sharp pulses.

    The PULSES clinical trial showed that delivering hydrocortisone in brief microdoses improved fatigue and emotional processing in such patients.

    Taken with the Otago findings, the trial suggests that mimicking the natural hourly beat matters as much as the total daily dose. Endocrinologists are now testing wearable pumps that release cortisol in programmable bursts to restore both circadian and ultradian balance.

    New frontiers in stress rhythms

    Future work will probe the molecular gears behind the hourly switch, from ion channels on CRH neurons to feedback from circulating cortisol and brainstem arousal centers.

    Genetic screens could reveal why stress rhythms shift with age, sex, and early-life adversity – factors already known to reshape hormone patterns.

    The Otago team also plans to study humans using noninvasive neuroimaging paired with fast saliva sampling. Showing that the same brain hormone choreography exists in people would pave the way for rhythm-based diagnostics in psychiatry and sleep medicine.

    In the future, simple wearables could detect erratic stress patterns early – before symptoms develop – much like smartwatches that alert users to irregular heartbeats.

    Behavioral interventions, timed light exposure, or low-dose CRH blockers could then nudge the rhythm back on track with fewer side effects than blunt hormone suppression.

    Ultimately, the research suggests that good health depends not just on maintaining cortisol levels within a safe range, but on allowing those levels to fluctuate at the right times.

    The study is published in Proceedings of the National Academy of Sciences.

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  • Management of C1-C2 Myelopathy Due to Periodontoid Pseudotumor With a Successful Posterior Stabilization and Decompression: A Case Report

    Management of C1-C2 Myelopathy Due to Periodontoid Pseudotumor With a Successful Posterior Stabilization and Decompression: A Case Report


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  • CDC Issues New Travel Health Alert For 5 European Countries

    CDC Issues New Travel Health Alert For 5 European Countries

    We at Travel Off Path are not here to fearmonger — we’re just here to report the facts.

    Nor is this article sponsored by Pfizer…

    The truth is, we all relate to you and hope that any news coming from the CDC remains in the rear-view mirror because who could possibly want to relive what we all went through in 2020?

    While ever-changing variants of COVID are here to stay, the CDC is honing in on another harmful disease that was thought to be put to bed in the 1950s when yet another controversial vaccine hit the market.

    Double decker bus in heart of London

    For travelers ready to make use of their passport and jet off to Europe, beyond entry requirements and travel advisories, there’s now another checklist to review before planning you dream vacation.

    The CDC is reporting Polio is circulating across some of Europe’s most popular countries, therefore it’s important to double check your medical records to ensure you’re not at risk catching a virus that was stopped in its tracks decades ago.

    In total, 39 countries have been listed as potential Polio hotspots, but you’re unlikely to travel to Gaza or Djibouti, so we’ve narrowed it down to the 5 European countries at risk for the spread of Polio.

    Travel Tip: Before jetting off to Europe, it’s not only medical records you’ll want to seek out. Make sure to dot your I’s and cross your T’s for a smooth trip abroad by utilizing Travel Off Path’s new 1-Minute Trip Check.

    Polio? That Still Exists?

    CDC headquartersCDC headquarters

    Listen, let’s not get into a deep discussion of vaccinations. We’ll save that for other platforms.

    None of us could say “mama” or “dada” to even give our consent to receive the first dose of the Polio shot, which you likely received around 2 months old, followed by another round or two before your first birthday.

    The Polio vaccine is required to attend public school, so parents are hamstrung deciding between injecting their babies or committing to homeschooling.

    The reason the shot is required is that Polio can be a crippling illness, ultimately fatal at times, or at the very least highly debilitating.

    Polio vaccinePolio vaccine

    The virus affected hundreds of thousands worldwide in the first half of the 20th century — there’s no denying that.

    Though, there’s an argument to be made that it wasn’t solely the Polio vaccine driving down case numbers.

    The point is that there’s a noticeable uptick in the disease for the CDC to trigger an official Level 2 – Practice Enhanced Precautions health alert.

    Polio, short for” poliomyelitis”, is indeed back, and not the comeback worthy of an LL Cool J song.

    There is no cure for Polio. That’s why the CDC encourages all travelers traveling internationally to one of the 39 countries listed to double-check they’re up to date on vaccinations as it’s stated by WebMD that “You’re at risk of getting polio if you’re unvaccinated. If you have been vaccinated, it is extremely rare for you to get it”.

    Most Adults Are Currently Protected

    Child with bandage after vaccinationChild with bandage after vaccination

    We are fully in tandem with the CDC on this — it’s highly important to wash your hands. You see, every country has different sanitary standards.

    Once you see India’s street food enter your TikTok algorithm, you’ll understand…

    As gross as it sounds, Polio is spread through fecal matter. As such, we’re always simply trusting that our food handlers are following a hygienic protocol by thoroughly washing their hands, but that’s not always the case, hence endless food poisoning horror stories when traveling abroad.

    The good news is most adults are protected against Polio since it was a required vaccination, but adult boosters may be an option if vaccinated as a child and have not received a booster before.

    Child with bandage after vaccinationChild with bandage after vaccination

    But the CDC is reminding parents that children should be vaccinated 4 times at this schedule, especially if you’re traveling internationally in the near future:

    • 1st does – 2months old
    • 2nd dose – 4 months old
    • 3rd dose – 6 – 18 months old
    • 4th dose – 4 – 6 years old

    Full List Of 39 Destinations With Circulating Poliovirus

    Chances are a majority of the following list won’t be on your travel radar any time soon unless you’re the rare type of traveler that views some of Africa’s most dangerous countries as a good time.

    Tourist visiting Park Güell in BarcelonaTourist visiting Park Güell in Barcelona

    However, what’s most surprising from the CDC’s health alert is that some of Europe’s most popular nations are affected.

    For example, if you’re planning a trip to Oktoberfest festivities next month in Germany, you might want to request a copy of your medical records.

    Germany is not alone. Finland, Poland, Spain, and the UK have all seen enough cases to warrant an official warning.

    If you haven’t been vaccinated, the most concerning aspect of Polio is that there may be no symptoms at all, yet you may still be infected (sounds familiar, right?).

    Woman visiting historic church in Hanover, GermanyWoman visiting historic church in Hanover, Germany

    The following countries have been listed by the CDC as having circulating Poliovirus:

    • Afghanistan
    • Algeria
    • Angola
    • Benin
    • Burkina Faso
    • Cameroon
    • Central African Republic
    • Chad
    • Côte d’Ivoire
    • Democratic Republic of the Congo
    • Djibouti
    • Egypt
    • Ethiopia
    • Finland
    • French Guiana
    • Gaza
    • Germany
    • Ghana
    • Guinea
    • Indonesia
    • Israel
    • Kenya
    • Liberia
    • Niger
    • Nigeria
    • Pakistan
    • Papua New Guinea
    • Poland
    • Senegal
    • Sierra Leone
    • Somalia
    • South Sudan
    • Spain
    • Sudan
    • Tanzania
    • Uganda
    • United Kingdom
    • Yemen
    • Zimbabwe

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  • 5 walnuts a day could cut colon cancer risk? Study reveals the best way to eat them for good health – Colon cancer prevention? Study suggests just 5 walnuts a day could help

    5 walnuts a day could cut colon cancer risk? Study reveals the best way to eat them for good health – Colon cancer prevention? Study suggests just 5 walnuts a day could help

    Walnuts are packed with powerful compounds, including omega-3 fatty acids, vitamin E (tocopherols), plant sterols, and a polyphenol called pedunculagin. Animal studies show that these nutrients can slow the growth of tumours in colon, breast, prostate, and kidney cancers by reducing cancer cell activity and preventing the formation of new blood vessels that feed tumours. While these results are promising, human trials are still limited and ongoing.

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