Health
Influenza or a cold? A new technology can help you
Smart gadgets in the home might soon be able to tell you what’s wrong with you. But the technology is good news for a lot of other things too.
Microresonators made of germanium. These might have a bigger impact on your future than you might think.
« Influenza or a cold? A new technology can help you
Newswise — Some people do such smart and difficult things that it’s hard to see what in the world they might have to do with you and me, so we just shrug them off. But that’s often the wrong response.
What if you had a simple gadget at home that could tell you why you’re feeling so lousy?
Our microresonator is about 100 times better than what was available before for the longwave infrared spectrum.
What if this gadget could within short order check whether you have COVID or the flu – or maybe it would even pick up that you have diabetes without knowing it? The device could figure all this out without you having to go to a doctor or a laboratory.
Stores the light better
This technology could become a reality within a few years, and electrical engineers are some of people who make it possible to create such gadgets, which contain a key component called the whispering gallery mode microresonator.
New technology is providing better optical sensors, which are important for electronics, including devices that analyse chemicals using light.
“We’ve built the lowest loss whispering gallery mode microresonator out there for the longwave infrared spectrum. Because the longwave infrared spectrum provides definitive information about chemicals, it provides new possibility for sensing applications,” says Dingding Ren, a researcher at the Norwegian University of Science and Technology’s (NTNU) Department of Electronic Systems.
We’ll talk more about what a microresonator is later in the article. But first back to Ren. He and his colleagues have developed a new whispering gallery mode microresonator – which can store light for certain wavelengths much longer in the resonance.
“Our microresonator is about 100 times better than what was available before for the longwave infrared spectrum,” says Ren.
“It can retain the light 100 times longer than previous versions, which amplifies the optical field inside and makes nonlinear processes much easier, such as frequency comb generation,” he said.
Opens up great opportunities
Storing light waves in the infrared part of the light spectrum more effectively is good news for several types of new technologies, especially for particle sensing and spectroscopic chemical identification that analyse a gas/fluid sample to check for viruses and bacteria and other nasties you might have.
The new microresonator means that scientists can develop broadband frequency combs in the longwave infrared spectrum using these devices. And just what might those be?
Frequency combs are laser lights whose spectrum consists of a series of discrete, equally spaced frequency lines. These can be found various places, such as in your GPS, in atomic clocks and in fibre optic equipment used in telephones and computers. The technology also opens the door to analysing several chemicals at once, if a broadband frequency comb is available at the longwave infrared spectrum.
“The technology is still in its initial stage when it comes to measurements in this the longwave infrared spectrum of light. But our improvement gives us the possibility to identify several different chemicals in real time in the near future,” says Ren.
This kind of spectroscopic machine already exists, like something called a Fourier-transform infrared interferometer, but they are so big and so expensive that only hospitals and big budget institutions can afford them. Other, slightly simpler machines might be able to analyse a few chemicals, but not many at once – unlike what the new technology could make possible.
Ren has worked closely with Professor David Burghoff and his colleagues at the University of Notre Dame in the USA.
“The competition is fierce in this field,” says Ren.
The new microresonator is made using the element germanium. The material may sound exotic, but was used in the world’s first transistor as early as 1947, before silicon took over that market.
We can compare the microresonator to what happens with the sound in the whispering gallery in St. Paul’s Cathedral in London.
Today, germanium is frequently used in optical lenses in sensors and infrared cameras, and it is consequently neither particularly rare nor expensive. These are also advantages when theory is going to be brought to the market.
What are microresonators anyway?
Microresonators, which a type of optical cavities, can store high optical field inside a very small volume. They can be made into a trace or disk geometry, but they usually are at a microscale dimension, similar to the thickness of a hair. Light travels inside the microresonator in circles, so the optical field gets amplified.
“We can compare the microresonator to what happens with the sound in the whispering gallery in St. Paul’s Cathedral in London,” says Ren.
This elliptical gallery has produced a famous phenomenon. You can whisper at one end of it and people at the other end of the room can hear you, even though they wouldn’t normally be to able hear you at that distance. The sound waves are amplified by the shape of the room and the walls, which is how light waves behave in the microresonator. You can read the research article if you want to try to understand this phenomenon better. The link can be found at the bottom of the article.
Funded by Fripro money
Ren is financing the research through a Fripro project grant from the Research Council of Norway, which lasts for three years. Money from Fripro is dedicated to basic research.
“We promised that we would develop a better microresonator, and we’ve succeeded,” Ren said. The research group delivered on its promise.
Stunning work
Bjørn-Ove Fimland and Astrid Aksnes, both professors in NTNU’s Department of Electronic Systems, have provided advice along the way.
“Ren has done excellent work, which is supported by the fact that he’s had an article published in Nature Communications,” says Aksnes.
The fact that we can now measure in the longwave IR range (8-14 µm, or micrometres) of the light spectrum opens up many possibilities in relation to use in imaging and detection, environmental monitoring and biomedical applications, says Aksnes.
“Many molecules have fundamental vibrational bands in the mid-wave IR range (2-20 µm), the so-called ‘molecular fingerprint region’. By measuring in this wave range, we achieve higher sensitivity,” she says.
Reference: Ren, D., Dong, C., Addamane, S.J. et al. High-quality microresonators in the longwave infrared based on native germanium. Nat Commun 13, 5727 (2022). https://doi.org/10.1038/s41467-022-32706-1
Source: Norwegian University of Science and Technology (NTNU)
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Lifestyle
8 Ways to Help Protect Your Vision Right Now
As you get older, your risk for some eye diseases may increase. However, there are steps you can take to keep your eyes healthy – and it starts with taking care of your overall health. Set yourself up for a lifetime of seeing your best with these eight tips in honor of Healthy Vision Month. Protect Your Vision!
8 Ways to Help Protect Your Vision Right Now
(Feature Impact) As you get older, your risk for some eye diseases may increase. However, there are steps you can take to keep your eyes healthy – and it starts with taking care of your overall health.
Set yourself up for a lifetime of seeing your best with these eight tips from the experts at the National Eye Institute in honor of Healthy Vision Month:
1. Find an eye doctor you trust.
Many eye diseases don’t have any early symptoms, so you could have a problem and not know it. An eye doctor can help you stay on top of your eye health. Find an eye doctor you trust by asking friends and family if they like their doctors. You can also check with your health insurance plan to find eye doctors near you.
2. Ask how often you need a dilated eye exam.
Getting a dilated eye exam is the single best thing you can do for your eye health. It’s the only way to find eye diseases early, when they’re easier to treat – and before they cause vision loss. Your eye doctor will decide how often you need an exam based on your risk for eye diseases.
3. Add more movement to your day.
Physical activity can lower your risk for health conditions that can affect your vision, like diabetes and high blood pressure. If you have trouble finding time for physical activity, try building it into other activities. Walk around while you’re on the phone, do push-ups or stretch while you watch TV or dance while you’re doing chores. Anything that gets your heart pumping counts.
4. Get your family talking about eye health history.
Some eye diseases – like glaucoma and age-related macular degeneration – can run in families. While it may not be the most exciting topic of conversation, talking about your family health history can help everyone stay healthy. The next time you’re chatting with relatives, ask if anyone knows about eye problems in your family. Be sure to share what you learn with your eye doctor to see if you need to take steps to lower your risk.
5. Step up your healthy eating game.
Eating healthy foods helps prevent health conditions – like diabetes or high blood pressure – that can put you at risk for eye problems. Eat right for your sight by adding more eye-healthy foods to your plate, such as dark, leafy greens like spinach, kale and collard greens, and fish high in omega-3 fatty acids like halibut, salmon or tuna.
6. Make a habit of wearing your sunglasses – even on cloudy days.
The sun’s UV rays can not only harm your skin, but the same goes for your eyes. However, wearing sunglasses that block 99-100% of both UVA and UVB radiation can protect your eyes and lower your risk for cataracts.
7. Stay on top of long-term health conditions like diabetes and high blood pressure.
Diabetes and high blood pressure can increase your risk for some eye diseases, like glaucoma. If you have diabetes or high blood pressure, ask your doctor about steps you can take to manage your condition and lower your risk of vision loss.
8. If you smoke, make a plan to quit.
Quitting smoking is good for your entire body, including your eyes. Kicking the habit can help lower your risk for eye diseases like macular degeneration and cataracts. Quitting smoking is hard, but it’s possible – and a plan can help.
Test your eye health knowledge with a quick quiz and find more vision resources at nei.nih.gov/hvm.
Photo courtesy of Shutterstock
SOURCE:
Our Lifestyle section on STM Daily News is a hub of inspiration and practical information, offering a range of articles that touch on various aspects of daily life. From tips on family finances to guides for maintaining health and wellness, we strive to empower our readers with knowledge and resources to enhance their lifestyles. Whether you’re seeking outdoor activity ideas, fashion trends, or travel recommendations, our lifestyle section has got you covered. Visit us today at https://stmdailynews.com/category/lifestyle/ and embark on a journey of discovery and self-improvement.
Lifestyle
Tobacco is still one of the world’s top killers – here are the key obstacles to enacting generational smoking bans
Marie Helweg-Larsen, Dickinson College
Smoking is really bad for you. Most people know that. Even smokers think smoking is bad for one’s health. But most people don’t know just how bad it is.
More people in the United States die every year from smoking than from alcohol, illegal drug use, car accidents, suicides and murders combined. Cigarette smoking costs an estimated US$240 billion annually in health care costs, which harm not only smokers but also nonsmokers, communities and the economy. Smoking is the top preventable cause of death and disease in the U.S. and worldwide.
The number of smokers in the U.S. has declined from 41% in 1944 to 11% in 2024. However, over 25 million Americans still smoke.
This drop is partly the result of many smoking laws enacted in the past 50 years. They include national bans on cigarette advertising on television and radio (1971), smoking on commercial flights (2000), sale of fruit- or candy-flavored cigarettes (2009), and sale of cigarettes to people ages 18 to 20 (2019). New policies might seem as strange or unfamiliar as these measures did at the time.
One potentially transformative idea – creating a tobacco-free generation – would build on these past laws. It would phase out smoking by banning it permanently for anyone born after a specific date. For example, a law could make it illegal for anyone under 21 to ever buy cigarettes, whereas people age 21 or older at the time would not be affected. The focus would be on tobacco sales, which already require age verification in the U.S., not on criminalizing tobacco use.
As a psychological scientist, I have studied for decades how people think about smoking. In my view, the key obstacle to creating future generations of nonsmokers is that people do not fully understand how dangerous smoking is and do not realize the formidable influence of the tobacco industry.
Creating a tobacco-free generation
The idea of creating a tobacco-free generation was first proposed by health researchers in 2010. In 2021 the town of Brookline, Massachusetts, became the first U.S. community to adopt it. Brookline’s ordinance prohibits tobacco and vape sales to anyone born on or after Jan. 1, 2000. It has survived a legal challenge and has been emulated in 22 more Massachusetts towns.
As of early 2026, Hawaii and Massachusetts are considering statewide tobacco-free generation bills. Abroad, the Maldives enacted the first countrywide ban in 2025.
Similar proposals have faced pushback elsewhere. In New Zealand, a ban was adopted in 2022 but repealed in 2024. The United Kingdom is considering a similar bill after an earlier version was scrapped due to a snap election.
Why people underestimate harm from cigarettes
It is hard to visualize what exactly it means that 480,000 people in the U.S. die from smoking every year or that each cigarette that you smoke shortens your life by 20 minutes. It is also easy to feel optimistically biased about one’s personal risk as a smoker and believe that others are more likely to become addicted or die prematurely.
Studies show that nonsmokers, former smokers and current smokers underestimate smoking risks. One likely reason is messaging by the tobacco industry, which claimed for decades that cigarettes were safe, even though tobacco industry scientists knew as early as 1953 that smoking caused lung cancer.
Another factor is glamorization of cigarettes in movies. Fully half of the top films released in 2024 showed tobacco imagery, typically of cigarettes. Research shows that adolescents and young adults who watch smoking in movies are more interested in taking up smoking.
Finally, smoking deaths may seem to be unremarkable because some of the illnesses that cigarette smoking causes, such as heart disease or cancer, are commonplace. And unlike deaths from drug overdoses, we do not always see the consequences of a lifetime of smoking. https://www.youtube.com/embed/2mKyosQbFNY?wmode=transparent&start=0 Smoking imagery is widespread in popular culture and may be one driver of tobacco use, especially among young Americans.
What about freedom of choice?
A common argument against laws that regulate personal choices, such as whether to smoke or wear seat belts, is that people prize their autonomy and don’t like governments telling them how to live. This isn’t a new challenge for public health policies, which often restrict private citizens’ freedom to do as they wish.
People can be persuaded that community action should trump individual choice if a behavior, such as smoking cigarettes or driving while drunk, harms others who don’t engage in it. Many public health laws are designed to protect people who are innocent or vulnerable. For example, current smoking laws have been enacted in part to protect nonsmokers who are exposed to secondhand smoke, especially children. And smoking increases health care costs for everyone, not just smokers.
By preventing people in the U.S. who cannot legally buy cigarettes now from ever doing so, generational smoking bans balance the rights of current adult smokers against the major public health benefits of a phased smoking ban that will eventually end the smoking epidemic.
Arguments against generational smoking laws
The tobacco industry’s attempts to undermine tobacco health policies are well documented and follow a predictable pattern. For example, when the U.K. government considered a generational smoking policy in 2023, tobacco companies and their supporters argued that smoking was a minor problem, that individuals should be responsible for their own choices, and that a nationwide ban would lead to illegal behavior or hurt business profits.
In a 2025 study assessing how Belgian politicians viewed generational smoking bans, researchers heard similar arguments. Respondents across the political spectrum valued personal freedom and informed individual choice more highly than protecting children. The politicians also believed that young people could understand how smoking affected their health, and that raising awareness was more important than bans. These arguments aligned with tobacco industry positions.
However, research shows that young people hold many optimistic beliefs about smoking, especially with respect to the addictiveness of nicotine and the likelihood that they will avoid becoming lifelong smokers. Studies have also found that adolescents don’t know enough to make an informed choice to smoke. These findings matter because the tobacco industry routinely targets young people in an effort to create lifelong smokers.
The tobacco industry’s harm reduction approach frames e-cigarettes, also known as vapes, as a way to create a smoke-free future by transitioning smokers to other nicotine products. But research shows that the tobacco industry actively markets nicotine products such as vapes to young people to create a new generation of nicotine users.
Not a silver bullet
Curbing the use of an addictive product is challenging, and there are ways for young people to obtain cigarettes illegally, as they do now in places where cigarette buyers must be at least 21. Tactics include shopping at stores that don’t check IDs, having older friends buy cigarettes and purchasing cigarettes illegally online.
Tobacco-free generation policies aren’t a silver bullet. They work most effectively in conjunction with other measures, such as plain packaging; high prices; bans on displays, advertising and flavored products; smoking cessation support; and public health messages making clear that cigarettes are unsafe at any age.
Still, health experts and groups including the American Heart Association and the American College of Cardiology argue that creating a tobacco-free generation could dramatically reduce preventable deaths and secure a healthier future for today’s children and future generations. In my view, understanding the obstacles to change is a critical step toward achieving this goal.
Marie Helweg-Larsen, Professor of Psychology, Dickinson College
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Lifestyle
Women are at a higher risk of dying from heart disease − in part because doctors don’t take major sex and gender differences into account
Heart disease impacts women differently than men due to genetic and gender biases in healthcare. Awareness and improved treatment approaches are essential for better outcomes.
Last Updated on April 20, 2026 by Daily News Staff
Amy Huebschmann, University of Colorado Anschutz Medical Campus and Judith Regensteiner, University of Colorado Anschutz Medical Campus
A simple difference in the genetic code – two X chromosomes versus one X chromosome and one Y chromosome – can lead to major differences in heart disease. It turns out that these genetic differences influence more than just sex organs and sex assigned at birth – they fundamentally alter the way cardiovascular disease develops and presents.
While sex influences the mechanisms behind how cardiovascular disease develops, gender plays a role in how healthcare providers recognize and manage it. Sex refers to biological characteristics such as genetics, hormones, anatomy and physiology, while gender refers to social, psychological, and cultural constructs. Women are more likely to die after a first heart attack or stroke than men. Women are also more likely to have additional or different heart attack symptoms that go beyond chest pain, such as nausea, jaw pain, dizziness and fatigue. It is often difficult to fully disentangle the influences of sex on cardiovascular disease outcomes versus the influences of gender.
While women who haven’t entered menopause have a lower risk of cardiovascular disease than men, their cardiovascular risk accelerates dramatically after menopause. In addition, if a woman has Type 2 diabetes, her risk of heart attack accelerates to be equivalent to that of men, even if the woman with diabetes has not yet gone through menopause. Further data is needed to better understand differences in cardiovascular disease risk among nonbinary and transgender patients.
Despite these differences, one key thing is the same: Heart attack, stroke and other forms of cardiovascular disease are the leading cause of death for all people, regardless of sex or gender.
We are researchers who study women’s health and the way cardiovascular disease develops and presents differently in women and men. Our work has identified a crucial need to update medical guidelines with more sex-specific approaches to diagnosis and treatment in order to improve health outcomes for all.
Gender differences in heart disease
The reasons behind sex and gender differences in cardiovascular disease are not completely known. Nor are the distinct biological effects of sex, such as hormonal and genetic factors, versus gender, such as social, cultural and psychological factors, clearly differentiated.
What researchers do know is that the accumulated evidence of what good heart care should look like for women compared with men has as many holes in it as Swiss cheese. Medical evidence for treating cardiovascular disease often comes from trials that excluded women, since women for the most part weren’t included in scientific research until the NIH Revitalization Act of 1993. For example, current guidelines to treat cardiovascular risk factors such as high blood pressure are based primarily on data from men. This is despite evidence that differences in the way that cardiovascular disease develops leads women to experience cardiovascular disease differently.
In addition to sex differences, implicit gender biases among providers and gendered social norms among patients lead clinicians to underestimate the risk of cardiac events in women compared with men. These biases play a role in why women are more likely than men to die from cardiac events. For example, for patients with symptoms that are borderline for cardiovascular disease, clinicians tend to be more aggressive in ordering artery imaging for men than for women. One study linked this tendency to order less aggressive tests for women partly to a gender bias that men are more open than women to taking risks.
In a study of about 3,000 patients with a recent heart attack, women were less likely than men to think that their heart attack symptoms were due to a heart condition. Additionally, most women do not know that cardiovascular disease is the No. 1 cause of death among women. Overall, women’s misperceptions of their own risk may hold them back from getting a doctor to check out possible symptoms of a heart attack or stroke.
These issues are further exacerbated for women of color. Lack of access to health care and additional challenges drive health disparities among underrepresented racial and ethnic minority populations.
Sex difference in heart disease
Cardiovascular disease physically looks different for women and men, specifically in the plaque buildup on artery walls that contributes to illness.
Women have fewer cholesterol crystals and fewer calcium deposits in their artery plaque than men do. Physiological differences in the smallest blood vessels feeding the heart also play a role in cardiovascular outcomes.
Women are more likely than men to have cardiovascular disease that presents as multiple narrowed arteries that are not fully “clogged,” resulting in chest pain because blood flow can’t ratchet up enough to meet higher oxygen demands with exercise, much like a low-flow showerhead. When chest pain presents in this way, doctors call this condition ischemia and no obstructive coronary arteries. In comparison, men are more likely to have a “clogged” artery in a concentrated area that can be opened up with a stent or with cardiac bypass surgery. Options for multiple narrowed arteries have lagged behind treatment options for typical “clogged” arteries, which puts women at a disadvantage.
In addition, in the early stages of a heart attack, the levels of blood markers that indicate damage to the heart are lower in women than in men. This can lead to more missed diagnoses of coronary artery disease in women compared with men.
The reasons for these differences are not fully clear. Some potential factors include differences in artery plaque composition that make men’s plaque more likely to rupture or burst and women’s plaque more likely to erode. Women also have lower heart mass and smaller arteries than men even after taking body size into consideration.
Reducing sex disparities
Too often, women with symptoms of cardiovascular disease are sent away from doctor’s offices because of gender biases that “women don’t get heart disease.”
Considering how symptoms of cardiovascular disease vary by sex and gender could help doctors better care for all patients.
One way that the rubber is meeting the road is with regard to better approaches to diagnosing heart attacks for women and men. Specifically, when diagnosing heart attacks, using sex-specific cutoffs for blood tests that measure heart damage – called high-sensitivity troponin tests – can improve their accuracy, decreasing missed diagnoses, or false negatives, in women while also decreasing overdiagnoses, or false positives, in men.
Our research laboratory’s leaders, collaborators and other internationally recognized research colleagues – some of whom partner with our Ludeman Family Center for Women’s Health Research on the University of Colorado Anschutz Medical Campus – will continue this important work to close this gap between the sexes in health care. Research in this field is critical to shine a light on ways clinicians can better address sex-specific symptoms and to bring forward more tailored treatments.
The Biden administration’s recent executive order to advance women’s health research is paving the way for research to go beyond just understanding what causes sex differences in cardiovascular disease. Developing and testing right-sized approaches to care for each patient can help achieve better health for all.
Amy Huebschmann, Professor of Medicine, University of Colorado Anschutz Medical Campus and Judith Regensteiner, Professor of Medicine, University of Colorado Anschutz Medical Campus
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Our Lifestyle section on STM Daily News is a hub of inspiration and practical information, offering a range of articles that touch on various aspects of daily life. From tips on family finances to guides for maintaining health and wellness, we strive to empower our readers with knowledge and resources to enhance their lifestyles. Whether you’re seeking outdoor activity ideas, fashion trends, or travel recommendations, our lifestyle section has got you covered. Visit us today at https://stmdailynews.com/category/lifestyle/ and embark on a journey of discovery and self-improvement.
