Health
Your sweat could hold secrets about your health, researchers say — here’s how
New technology could make it significantly easier to monitor patients’ vital health signs.
Engineers at the University of California San Diego have developed an electronic finger wrap that monitors important chemical levels — such as glucose, vitamins and even drugs — using only human sweat, the university stated in a news release.
The wearable innovation is said to be as easy as wearing an adhesive bandage.
The research was published on Sept. 3 in the journal Nature Electronics.
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“This is the first demonstration of a complete zero-electric powered sweat (extraction and sensing) platform that enables non-invasive monitoring of multiple biomarkers to support a wide range of practical scenarios in personalized health care monitoring and wellness management,” Dr. Joseph Wang, PhD, a professor in the Aiiso Yufeng Li Family Department of Chemical and Nano Engineering at UC San Diego, told Fox News Digital in an email.
New technology from the University of California San Diego, pictured here, could make it significantly easier to monitor patients’ vital health signs. (Shichao Ding)
The wearable apparatus wraps snugly around the finger and draws its power from the fingertip’s sweat, according to the researchers.
“Fingertips, despite their small size, are among the body’s most prolific sweat producers, each packed with over 1,000 sweat glands,” the news release stated.
The device is constructed from electronic components and printed on a thin, flexible and stretchable polymer material.
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It conforms to the finger and is “durable enough to withstand repeated bending, stretching and movement,” the researchers stated.
Added Wang, “It is based on a remarkable integration of energy harvesting and storage components, with multiple biosensors in a fluidic microchannel, along with the corresponding electronic controller, all at the fingertip.”
Health at your fingertips — literally
In the study trials, the finger wrap showed to be effective, according to the research team.
“The fingertip-wearable microgrid works automatically after it is worn on the finger,” study co-first author Shichao Ding, Ph.D., a postdoctoral researcher in Wang’s research group at the UC San Diego Jacobs School of Engineering, told Fox News Digital via email.
The wearable apparatus wraps snugly around the finger and draws its power from the fingertip’s sweat, according to the researchers. (iStock)
Participants wore the device on the fingertip while performing daily activities such as working at a desk, walking, eating and sleeping to assess “the real-time performance of the sensors and energy-harvesting system.”
Biomarker levels can be automatically monitored from the sweat for on-demand health tracking, Ding added.
Fingertip glands can produce 100 to 1,000 times more sweat than most other areas of the body, even during rest, according to the researchers.
“Fingertips are among the body’s most prolific sweat producers, each packed with over 1,000 sweat glands.”
“This constant trickle of natural perspiration — without any stimuli or physical activity — offers a reliable energy source, fueling the device even during periods of inactivity or sleep,” they stated.
Ding added, “Autonomous power, sensing and treatment all in one device — that’s the ultimate goal.”
Next steps
Looking ahead, the researchers plan to enhance the device’s performance with additional energy-harvesting techniques.
Those might involve generating mechanical energy from human motion, such as common finger movements like tapping or typing, Ding said.
“In the case of diabetes, such a device could continuously monitor glucose levels, automatically deliver insulin as needed, and then assess the treatment’s effectiveness by further monitoring biomarker levels,” a researcher said. (iStock)
The researchers are working to optimize the circuit design, battery, low-power sensing modules and data transmission to improve the device’s lifespan, stability and functionality, the researcher said, which will help to ensure a sustained balance between energy generation and consumption.
“Researchers are working to develop a closed-loop system that not only monitors biomarkers, but also administers treatments based on the collected data,” Ding told Fox News Digital.
“For instance, in the case of diabetes, such a device could continuously monitor glucose levels, automatically deliver insulin as needed, and then assess the treatment’s effectiveness by further monitoring biomarker levels.”
A ‘pioneering’ innovation
Seokheun “Sean” Choi, PhD, a professor in the electrical and computer engineering department at Binghamton University in New York, was not involved in the device’s development but commented on its potential.
Wearable technology has made significant strides, noted Choi, who specializes in developing biosensing and bioenergy technologies, including self-powered biosensors and other solutions for personalized health monitoring.
The finger-wrap is “revolutionary” in terms of simple power generation and health monitoring, a doctor confirmed. (iStock)
“However, achieving true energy independence — where devices are standalone and always-on — remains a major challenge,” he told Fox News Digital.
Current wearables rely on batteries or other energy storage devices, noted Choi, which pose limitations “due to their bulk and limited energy capacity.”
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The finger-wrap is “revolutionary” in terms of simple power generation and health monitoring, he confirmed.
“To realize the next generation of wearable applications, power autonomy is essential, allowing devices to operate continuously, independently and self-sustainably,” Choi said.
“Autonomous power, sensing and treatment all in one device — that’s the ultimate goal.”
“Professor Wang’s group has pioneered the integration of a sweat-driven electrochemical fuel cell with an energy storage battery, achieving sustainable high performance by using fingertip perspiration to generate meaningful power,” he went on.
“This is revolutionary because sweat was non-invasively and practically harvested from the fingertip in a simple, straightforward manner,” an expert said. (iStock)
“This is revolutionary because sweat was non-invasively and practically harvested from the fingertip in a simple, straightforward manner.”
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In addition to monitoring metabolic functions, Choi said, this solution also has the potential to be used for a wide range of medical applications.
Over the two and a half years following the 2022 rollout of the 988 national suicide prevention hotline, the rate of suicides among young people in the United States dropped 11 percent below projections, decreasing most sharply in states with a higher volume of answered 988 calls, a new study has found.
The findings, published today as a research letter in JAMA, compared suicide deaths from July 2022 to December 2024 with sophisticated mathematical projections that were based on historical trends. This yielded good news, with 4,372 fewer suicides of adolescents and young adults, ages 15 to 34, than had been projected.
To ensure that the decline was related to the use of the hotline, researchers at Harvard Medical School teased out the trends in states with high and low usage of the hotline. The findings were striking: The 10 states with the largest increases in 988 calls experienced an 18.2 percent reduction in observed suicides compared with expected suicides; in the 10 states with the lowest uptake, the reduction was smaller, 10.6 percent.
The results suggest that the government’s investment in the 988 rollout has translated into “a measurable reduction of deaths,” said Dr. Vishal Patel, a resident physician at Brigham and Women’s Hospital and one of the authors of the study.
“What our study has added,” he said, “is evidence for the deeper benefit of the program, and that is, that at the population level, among young people at least, suicide mortality is lower than it would have been without the program.”
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He added, “The implication of that is that sustained funding for this program matters.”
The United States rolled out the three-digit hotline with bipartisan support in July 2022, replacing a 10-digit hotline number, and augmented it with a $1.5 billion investment in crisis center capacity. Since its inception, the service has fielded more than 25 million contacts, according to the Department of Health and Human Services. The agency has asked Congress for $534.6 million to fund the program for 2027.
Last summer, the Trump administration terminated one element of the hotline, the Press 3 option for L.G.B.T.Q.+ callers. The Substance Abuse and Mental Health Services Administration said that the Press 3 option was being discontinued because it had exhausted its funding from Congress and that the hotline would “focus on serving all help seekers.”
But advocacy groups and policymakers protested the decision, and in testimony before the Senate on Tuesday, the health secretary, Robert F. Kennedy Jr., said his agency was planning to restore the Press 3 option.
Dr. Patel said his group had become curious about measuring the program’s effectiveness after Press 3 was eliminated. While call volume and satisfaction surveys suggested that 988 was succeeding, he said, the harder question was, “Did the creation of this 988 program, the transition from the old hotline to this hotline, actually move the needle on suicide mortality?”
Experts said it was difficult to tease out the beneficial effect of 988 from other things that changed in 2022, the year that the new hotline was created. Around that time, suicide prevention programs were being introduced in schools, in faith communities and on social media, but more important, the pandemic was ending.
“We were finally out of this crazy time, and there was a sense of optimism and hope,” said Jonathan B. Singer, a professor of social work at Loyola University Chicago and a co-author of “Suicide in Schools.” He called the downward trend in youth suicides “encouraging, but it is tempered by the fact that we don’t have a good explanation as to why.”
The authors acknowledged that their findings could not account for the influence of social and economic changes, changes in mental health services or public awareness about services.
But they did make comparisons to exclude other possible explanations. The authors looked for similar effects among American adults over 65, who are less likely to use the hotline. In that group, there was a reduction in suicides that exceeded expectations, but it was smaller, at just 4.5 percent.
To ensure the decline in suicides did not reflect a general improvement in young-adult mortality, the researchers tracked cancer deaths, and found there was no change. They also looked at the rates of suicide among young people in England, where no change had been made to the national crisis line in that time period; they found no reduction in youth suicides there.
Hannah Wesolowski, chief advocacy officer for the National Alliance on Mental Illness, said she was persuaded that the hotline had contributed to the improvement in suicide rates, in part because it did not appear among English youths or in older Americans.
“To me, that really helps hone in that this might really be the differentiator,” she said. “We are seeing potentially a pretty significant decline in suicides among young people. For public policy, this is strong evidence to double down on that we are doing.”
Emily Hilliard, a senior press secretary at the Department of Health and Human Services, said H.H.S. and SAMHSA are “committed to ensuring that all Americans have access” the 988 line, which she said “clearly provides lifesaving support, helping millions of people every year.”
If you are having thoughts of suicide, call or text 988 to reach the 988 Suicide and Crisis Lifeline or go to SpeakingOfSuicide.com/resources for a list of additional resources.
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A highly contagious digestive virus is surging across the U.S., experts warn.
Rotavirus, a double-stranded RNA virus, causes acute gastroenteritis — inflammation of the stomach and intestines — which can lead to severe diarrhea, vomiting, fever and stomach pain.
The virus primarily affects infants and young children, but there have also been outbreaks in elderly populations, such as nursing homes.
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Data from the Centers for Disease Control and Prevention shows that in the week ending April 4, out of 2,329 rotavirus tests, 7.3% were positive for the infection. Last year’s highest infection rate was 6.77% as of the week ending April 19.
Rotavirus, a double-stranded RNA virus, causes acute gastroenteritis — inflammation of the stomach and intestines — which can lead to severe diarrhea, vomiting, fever and stomach pain. (iStock)
“We’re seeing a lot of rotavirus in the wastewater right now,” Dr. Marc Siegel, Fox News senior medical analyst, confirmed to Fox News Digital. “Testing for rotavirus is way down, but the percentage of positive tests is up.”
While the virus typically peaks in the spring, it is not currently slowing down, he noted.
Why cases may be rising
Patricia Pinto-Garcia, M.D., a medical editor at GoodRx who is based in California, said there are several possible reasons for the rotavirus spike.
“Vaccine rates are down overall among young children, as they decreased during COVID,” she told Fox News Digital. “This means there’s a growing number of infants and young children who are vulnerable to infection.”
The rotavirus vaccine series must be completed by the time a child is 8 months old, she noted.
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As a result of the declining vaccinations, herd immunity isn’t protecting vulnerable children, according to Pinto-Garcia. “Children who haven’t finished the vaccine series yet, are too young to get vaccinated, or can’t get the vaccine due to medical illness are more likely to get exposed to the illness because other children aren’t vaccinated,” she said.
Siegel noted that before the vaccine became available, rotavirus resulted in 55,000 to 70,000 in the U.S. per year.
“Vaccine rates are down overall among young children, as they decreased during COVID,” a doctor told Fox News Digital. “This means there’s a growing number of infants and young children who are vulnerable to infection.” (iStock)
“I am concerned that the vaccination rate has been declining over the past seven years and is continuing to decline in the current climate of vaccine skepticism,” he said.
Surveillance methods are also much better than they used to be, Pinto-Garcia noted, which means public health experts are able to pick up and track cases better than ever before.
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“But we see that rotavirus-related healthcare visits are also up, so improved detection is not the only reason we are seeing this spike,” she said.
The COVID pandemic also disrupted the pattern of infections, according to Pinto-Garcia, so it’s “tricky” to compare the current levels against older cycles.
“It’s possible that what we are seeing is still some post-pandemic rebound, but it’s unlikely that this year’s pattern is fully explained by just this factor,” she added.
Transmission and risk
Dr. Zachary Hoy, a pediatric infectious disease specialist at Pediatrix Medical Group based in Nashville, Tennessee, often sees young patients with rotavirus.
“Rotavirus is spread via the fecal-oral route, meaning that a person comes into contact with virus droplets from contact with other children or adults, or from contact with objects such as toys that have been contaminated with the virus from someone who is sick,” he told Fox News Digital. “This can lead to outbreaks, especially at schools where many young children share the same toys.”
“It’s possible that what we are seeing is still some post-pandemic rebound, but it’s unlikely that this year’s pattern is fully explained by just this factor.”
Rotavirus is associated with many dehydration cases in the hospital due to the degree of diarrhea, according to Hoy.
In some severe cases, the virus can lead to seizures due to electrolyte imbalances from dehydration and loss of electrolytes in the stool.
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“Younger children do not have the reserves that older children and adults have, so they can become more dehydrated quicker and develop more severe electrolyte imbalances, leading to more severe infections,” Hoy said.
“Patients with problems with their immune systems or on medications that can decrease their immune systems can have more severe and prolonged infections, too.”
Treatment and care
Because rotavirus is a viral infection, antibiotics are not effective against it. There is no specific antiviral treatment for the condition, with doctors typically recommending supportive care.
“The mainstay of treatment is hospitalization for rehydration via intravenous (IV) fluids,” Hoy told Fox News Digital. “Sometimes it can take up to two to three days of IV fluids to help get patients rehydrated.”
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Blood draws are often necessary to evaluate patients’ electrolyte levels, such as sodium, potassium, calcium and magnesium, according to the doctor.
“If these electrolyte levels are significantly low, sometimes patients need special IV solutions or individual electrolyte medications,” he added.
“The mainstay of treatment is hospitalization for rehydration via intravenous (IV) fluids,” a doctor told Fox News Digital. (iStock)
Dr. Daniel Park, medical director of the Pediatric Emergency Department at UNC Health in Chapel Hill, North Carolina, noted that most children recover with supportive care, but parents should seek medical attention if a child shows signs of dehydration. Those include decreased urination, lethargy or inability to keep fluids down.
“While rare, rotavirus can be life-threatening in vulnerable populations, especially very young infants or children with underlying medical conditions,” Park told Fox News Digital.
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Prevention strategies
Given the lack of antiviral medications for rotavirus, doctors emphasize the importance of prevention, primarily the vaccine.
There are two rotavirus vaccines – Rotateq (a three-dose series) and Rotarix (a two-dose series). They are given starting at age 2 months as oral drops, not injections, according to Hoy.
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“It’s important to get the rotavirus vaccines on schedule, because these younger infants are at greatest risk if they get rotavirus,” he advised.
Other recommended prevention methods include handwashing with soap and water.
Every day we’re faced with a zillion small choices: Go to sleep early, or watch one more episode of that Netflix drama. Call an old friend to catch up, or cruise social media. Of course, no single action will guarantee a long, healthy life or doom you to an early grave. But those little daily decisions do add up, and over the long term they can make a difference when it comes to both your longevity and your health span, the amount of life spent in relatively good health.
Scroll through this theoretical “day in the life” and select the option that best fits your typical day. Not every situation will apply perfectly, but think about which choice you’d be most likely to make. This isn’t a formal scientific assessment. The goal here isn’t to assign you a “good” or “bad” score, but to help you understand the central factors that shape the way we age and how long we live.
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