Wednesday, July 30, 2025

 

From WebMD to AI chatbots: How innovation has empowered patients to take control of their health



New analysis highlights the transformative power of digital technology in shaping the e-patient era



JMIR Publications

From WebMD to AI Chatbots: How Innovation Has Empowered Patients to Take Control of Their Health 

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New Analysis Highlights the Transformative Power of Digital Technology in Shaping the E-Patient Era

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Credit: JMIR Publications




TORONTO, ON July 28, 2025 A new research article published in the Journal of Participatory Medicine unveils how successive waves of digital technology innovation have empowered patients, fostering a more collaborative and responsive health care system. The paper, titled "From Internet to Artificial Intelligence (Al) Bots: Symbiotic Evolutions of Digital Technologies and e-Patients," explores the symbiotic evolution of digital health tools and the increasingly engaged e-patient.

The concept of the e-patient, defined as an individual "equipped, enabled, empowered, and engaged" in their health, has been propelled forward by advancements spanning the early days of the internet to the latest in AI. This evolution marks a significant shift from the traditional passive patient role to one of active participation and co-production in health care.

"Our research demonstrates a clear trajectory where each digital innovation has built upon its predecessors, providing patients with unprecedented tools for self-care and interaction with the health care system," says Dr. Danny Sands, an author of the research. "This isn't just about convenience; it's about fundamentally changing the dynamic between patients and clinicians for the better."

The article details 9 key technological innovations and their profound impact on patient empowerment:

  • The World Wide Web, which democratized access to health information and medical literature.

  • Email, which facilitated asynchronous communication between patients and providers, breaking down traditional barriers.

  • Social networking, which created peer-to-peer support communities, enabling information sharing and emotional support.

  • Electronic health records (EHRs), which enhanced safety and confidence in care, laying the groundwork for patient access to their data.

  • Patient portals, which provided direct access to medical records, secured communication with health care teams, and streamlined administrative tasks.

  • Smartphones, which offered ubiquitous access to health information, apps, and connectivity with health care resources and self-monitoring devices.

  • Patient-generated health data (PGHD), which empowered patients to contribute their own health insights from self-monitoring devices, improving self-management and clinical understanding.

  • Telemedicine and telehealth, which improved access to professional care, especially for mental health and lifestyle needs, and expanded remote care options.

  • AI, which has emerged with vast potential to help patients understand their medical records, enhance comprehension of medical literature, and assist with complex health decisions.

The researchers emphasize that the rise of the e-patient, often driven by a desire for greater control and transparency, has in turn spurred further technological development. This ongoing cycle is creating a health care system that is increasingly safer and more attuned to individual patient needs.

"While we celebrate these advancements, we also recognize the ethical challenges that new technologies, particularly AI, present," Dr. Sands adds. "Concerns around patient safety, data privacy, and equitable access remain paramount and require careful consideration as we move forward."

The study concludes that the symbiotic evolution of digital health technologies and the ascendance of the e-patient are forging a future where communication, collaboration, and coordination between patients and clinicians are significantly improved, leading to a more patient-centric health care experience.

 


About the Journal of Participatory Medicine: 

The Journal of Participatory Medicine is a peer-reviewed, open-access journal dedicated to exploring the intersection of patients and health care, with a focus on patient engagement, empowerment, and shared decision-making. The journal is also the official journal of the Society for Participatory Medicine.

 

About JMIR Publications:

JMIR Publications is a leading open access publisher of digital health research and a champion of open science. With a focus on author advocacy and research amplification, JMIR Publications partners with researchers to advance their careers and maximize the impact of their work. As a technology organization with publishing at its core, we provide innovative tools and resources that go beyond traditional publishing, supporting researchers at every step of the dissemination process. Our portfolio features a range of peer-reviewed journals, including the renowned Journal of Medical Internet Research.

 

About the Society for Participatory Medicine:

The Society for Participatory Medicine is a 501 (c)(3) not-for-profit organization devoted to promoting the concept of participatory medicine, a movement in which networked patients shift from being mere passengers to responsible drivers of their health, and in which providers encourage and value them as full partners.
 

To learn more about JMIR Publications, please visit jmirpublications.com or connect with us via TwitterLinkedInYouTubeFacebook, and Instagram.

Head office: 130 Queens Quay East, Unit 1100, Toronto, ON, M5A 0P6 Canada

Media contact: communications@jmir.org

The content of this communication is licensed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, published by JMIR Publications, is properly cited.

Mayo Clinic deploys NVIDIA Blackwell infrastructure to drive generative AI solutions in medicine




Mayo Clinic



ROCHESTER, Minn. — Mayo Clinic took a pivotal step toward integrating AI solutions in the clinical setting with the deployment of NVIDIA DGX SuperPOD with NVIDIA DGX B200 systems, an advanced infrastructure that provides state-of-the-art AI compute capabilities.

Mayo Clinic and NVIDIA collaborated to enable the rapid innovation and development of foundation models in support of Mayo’s platform approach to healthcare, contributing to Mayo Clinic’s Bold. Forward. strategy and new innovations for generative AI solutions and digital pathology. These innovations are delivering new insights as Mayo is driving to improve patient outcomes and transform healthcare.

"Our aspiration for AI is to meaningfully improve patient outcomes by detecting disease early enough to intervene. What was once a hypothetical — 'If only we had the right data' — is now becoming reality thanks to AI and advanced computing," says Matthew Callstrom, M.D., Ph.D., medical director of the Department of Strategy and leader of Mayo Clinic’s Generative Artificial Intelligence Program.

The advanced computing infrastructure will initially support foundation model development for pathomics, drug discovery and precision medicine.

The NVIDIA Blackwell-powered DGX SuperPOD is built to efficiently process large, high-resolution imaging essential for AI foundation model training. Designed for speed and scalability, the Blackwell infrastructure enables Mayo Clinic to accelerate pathology slide analysis and foundation model development — reducing four weeks of work to just one, ultimately improving patient outcomes. This advanced computing infrastructure will also advance Mayo Clinic’s generative AI and multimodal digital pathology foundation model development.

Mayo Clinic, in partnership with Aignostics, developed a leading pathology foundation model called Atlas, trained on more than 1.2 million histopathology whole-slide images. With Atlas, Mayo Clinic clinicians and researchers can improve accuracy and reduce administrative tasks. The new computing capabilities will accelerate and improve clinical model development.

"This compute power, coupled with Mayo’s unparalleled clinical expertise and platform data of over 20 million digitized pathology slides, will allow Mayo to build on its existing foundation models. We’re transforming healthcare by quickly and safely developing innovative AI solutions that can improve patient outcomes and enable clinicians to dedicate more time to patient care while also accelerating commercial affiliations with other industry leaders," says Jim Rogers, CEO of Mayo Clinic Digital Pathology.

Journalists: Media kit with images for download available here.

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About Mayo Clinic Digital Pathology
Mayo Clinic Digital Pathology facilitates the global scaling of digital pathology solutions to benefit clinicians and patients, advancing key areas such as scanning, storage, foundation model development and the creation and deployment of cutting-edge algorithms. Working with Mayo Clinic innovators and external collaborators, Mayo Clinic Digital Pathology is wholly owned by Mayo Clinic and seeks to incubate and start impactful companies while investing in and acquiring existing companies, spurring innovation across pathology.

About Mayo Clinic
Mayo Clinic is a nonprofit organization committed to innovation in clinical practice, education and research, and providing compassion, expertise and answers to everyone who needs healing. Visit the Mayo Clinic News Network for additional Mayo Clinic news.



Breaking research at ADLM 2025: AI poised to revolutionize Lyme disease testing, treatment




Together, these findings spotlight the potential of AI to make a profound, positive difference in people’s lives when thoughtfully integrated into clinical laboratory medicine



Association for Diagnostics & Laboratory Medicine




CHICAGO — Today at ADLM 2025 (formerly the AACC Annual Scientific Meeting & Clinical Lab Expo), researchers will unveil a blood test developed with the help of artificial intelligence (AI) that identifies Lyme disease sooner and more accurately than the current standard — and that could translate to vastly improved patient outcomes. A second study highlights how certain generative AI tools can empower adolescents by helping them to gather useful medical information.

Together, these findings spotlight the potential of AI to make a profound, positive difference in people’s lives when thoughtfully integrated into clinical laboratory medicine.

Lyme test offers hope for early, effective treatment
Each year, more than 475,000 Americans are diagnosed with Lyme disease — a number that is only expected to climb due to climate change expanding the range of areas where ticks can live. When caught early, the condition responds well to antibiotics. However, the typical test — called two-tier serology — detects early Lyme accurately only 30% of the time. It’s a significant missed opportunity, since more than half of Lyme patients not diagnosed or treated within the first few weeks of infection will develop long-term health problems such as fatigue, neurocognitive issues, and arthritis.

The new test leverages AI to offer major improvement. Its sensitivity and specificity are both over 90%, “meaning 9 out of 10 patients are going to get a correct diagnosis and receive appropriate treatment, which lowers the risk of chronic illness significantly,” said Holly Ahern, a microbiologist and chief scientific officer at ACES Diagnostics.

Ahern and team built on research in rhesus macaque monkeys, whose immune response to the bacteria causing Lyme is similar to humans, to develop a panel that looks for 10 proteins (antigens) and is completed as a single test. This approach is an improvement over the two-tier method, which may require up to four tests.

Next, they analyzed blood samples from humans, including 123 people with Lyme disease and 197 uninfected individuals, to test whether adding machine learning to the test could bolster performance by detecting unique immune patterns. “You and I might get infected by the same bacteria, but we might both produce different antibody responses to it,” said Ahern. “With these antigens matched with a decision-tree–based classifier, we can actually pick that up in each individual case.”

The team found an algorithm that improved accuracy across all disease stages, correctly flagging infection in over 90% of early cases (versus 27% with the standard method). They hope the test — which, according to Ahern, is relatively inexpensive and works on standard laboratory equipment — will be commercially available by the end of 2026.


Medicine-GPT as an informational tool for adolescents
A second study assessed Medicine-GPT, a doctor-developed, free-to-use ChatGPT custom model. The research focused on adolescents because they tend to be early tech adopters who frequently search for information online, often on topics they don’t feel comfortable discussing with adults.

“Medicine-GPT shows promise as a powerful tool for addressing adolescent health inquiries, outperforming ChatGPT-4 in completeness, reasoning, and overall medical helpfulness,” said Austin Jin, a high school research intern at Weill Cornell Medicine in New York.

Jin and team gathered over 100 clinical questions related to lab medicine and diagnostics from Reddit’s “Ask Doctors” forum, filtering for posts by people aged 10-19 and sorted by “top” interactions. They evaluated how well the customized chatbot provided useful answers compared to its predecessor, ChatGPT-4.

Both models demonstrated complete factual accuracy, but Medicine-GPT outperformed ChatGPT-4 on other measures, achieving ratings of 66.6% for completeness, 60% for reasoning, and 46.6% for helpfulness (compared to 20%, 33.3%, and 23.3%, respectively, for ChatGPT-4). Both models received high ratings on clarity (80% for Medicine-GPT vs. 70% for ChatGPT-4).

However, a common challenge is that these tools can leave teenagers feeling overwhelmed, especially when chatbots present rare, fatal conditions as diagnostic possibilities. “This highlights the need for future AI tools to not only be medically accurate, but also context-aware, user-sensitive, and aligned with how clinicians communicate,” Jin said.“Rather than discouraging use, providers can guide adolescents on how to use these tools responsibly, emphasizing that AI … should never replace professional medical advice or personalized evaluation.”

About ADLM 2025
ADLM 2025 (formerly the AACC Annual Scientific Meeting & Clinical Lab Expo) offers 5 days packed with opportunities to learn about exciting science from July 27-31 in Chicago. Plenary sessions will explore urgent problems related to clinical artificial intelligence (AI) integration, fake medical news, and the pervasiveness of plastics, as well as tapping into the promise of genomics and microbiome medicine for personalized healthcare.
At the ADLM 2025 Clinical Lab Expo, more than 800 exhibitors will fill the show floor of the McCormick Place Convention Center in Chicago, with displays of the latest diagnostic technology, including but not limited to AI, point-of-care, and automation.


About the Association for Diagnostics & Laboratory Medicine (ADLM)
Dedicated to achieving better health for all through laboratory medicine, ADLM (formerly AACC) unites more than 70,000 clinical laboratory professionals, physicians, research scientists, and business leaders from 110 countries around the world. Our community is at the forefront of laboratory medicine’s diverse subdisciplines, including clinical chemistry, molecular diagnostics, mass spectrometry, clinical microbiology, and data science, and is comprised of individuals holding the spectrum of lab-related professional degrees, certifications, and credentials. Since 1948, ADLM has championed the advancement of laboratory medicine by fostering scientific collaboration, knowledge sharing, and the development of innovative solutions that enhance health outcomes. For more information, visit www.myadlm.org.

 

Leaf-inspired design brings bioplastics to the big leagues




Washington University in St. Louis






Society has long struggled with petroleum-derived plastic pollution, and awareness of microplastics’ detrimental effects on food and water supplies adds further pressure.

In response, researchers have been developing biodegradable versions of traditional plastics, or “bioplastics.” However, current bioplastics face challenges as well: Current versions are not as strong as petrochemical-based plastics and they only degrade through a high-temperature composting system.

Enter researchers at Washington University in St. Louis, who have solved both problems with inspiration from the humble leaf. Long before plastic, humans wrapped their food in leaves, which easily biodegrade due to an underlying structure of cellulose-rich cell walls. WashU’s chemical engineers decided to introduce cellulose nanofibers to the design of bioplastics.

“We created this multilayer structure where cellulose is in the middle and the bioplastics are on two sides,” said Joshua Yuan, the Lucy and Stanley Lopata Professor and chair of energy, environmental and chemical engineering at the McKelvey School of Engineering. Yuan is also director for the National Science Foundation-funded Carbon Utilization Redesign for Biomanufacturing (CURB) Engineering Research Center. “In this way, we created a material that is very strong and that offers multifunctionality,” he added.

The technology emerged from working with two of the highest production bioplastics today. In a study published in Green Chemistry earlier this year, Yuan and colleagues used a variation of their leaf-inspired cellulose nanofiber structure to improve the strength and biodegradability of polyhydroxybutrate (PHB), a starch-derived plastic; they further refined their technique for polylactic acid (PLA), as detailed in a new paper just published in Nature Communications.

The plastic packaging market is a $23.5 billion industry dominated by polyethylene and polypropylene, polymers made from petroleum that break down into harmful microplastics. The researchers’ optimized bioplastic, called Layered, Ecological, Advanced and multi-Functional Film (LEAFF), turned PLA into a packaging material that is biodegradable at room temperature. Additionally, the structure allows for other critical properties, such as low air or water permeability, helping keep food stable, and a surface that is printable. This improves bioplastics’ affordability since it saves manufacturers from printing separate labels for packaging. 

“On top of all of this, the LEAFF’s underlying cellulose structure gives it a higher tensile strength than even petrochemical plastics like polyethylene and polypropylene,” explained Puneet Dhatt, a PhD student in Yuan’s lab and first author on the article.

The innovation was in adding that cellulosic structure that WashU’s engineers replicated, cellulose fibrils embedded within the bioplastics.

“This unique biomimicking design allows us to address the limitations of bioplastic usage and overcome that technical barrier and allow for broader bioplastic utilization,” Yuan said.

Circular economy ready

The United States is uniquely positioned to dominate the bioplastics market and establish a “circular economy” wherein waste products are reused, fed back into systems instead of left to pollute the air and water or sit in landfills.

Yuan hopes this technology can scale up soon and seeks commercial and philanthropic partners to help bring these improved processes to industry. Competitors from Asian and European research institutions also are working to develop similar technology. But U.S. industries have an advantage due to the country’s vast agriculture system — and WashU is near the center of the nation’s agrichemical industry.

“The U.S. is particularly strong in agriculture,” Yuan said. “We can provide the feedstock for bioplastic production at a lower price compared to other parts of the world.”

The “feedstock” Yuan is referring to are chemicals such as lactic acid, acetate or fatty acids like oleate, products of corn or starch fermentation by microbes that serve as bioplastic factories.

Pseudomonas putida, for instance is a microbial strain widely used in the fermentation industry, including to produce a variety of polyhydroxyalkanoates (PHA), including PHB.

McKelvey Engineering researchers have designed ways to convert various wastes, including carbon dioxide, lignin and food waste, into bioplastics using strains such as P. putida. With improved bioplastic design, Yuan’s research further fills in that loop, with a version of PHB and PLA that could be produced much more efficiently and degrade safely into the environment.

“The United States has a waste problem, and circular reuse could go a long way to turning that waste into useful materials,” Yuan said. “If we can ramp up our bioplastic supply chain, it would create jobs and new markets,” he said.

 

 

Dhatt PS, Hu A, Hu C, Huynh V, Dai SY, Yuan JS, Biomimetic layered, ecological, advanced, multi-functional film for sustainable packaging. Nat Commun 16, 6649 (2025). DOI: https://doi.org/10.1038/s41467-025-61693-2

This work was supported by NSF EEC 2330245, NSF MCB 2229160, and U.S. Department of Energy BETO (Bioenergy Technologies Office) Projects.

Li J, Liu W, Chang A, Foudeh Z, Yu J, Wei P, Chen K, Hu C, Puneet D, Dai SY, Yuan JS. Integrated design of multifunctional reinforced bioplastics (MReB) to synergistically enhance strength, degradability, and functionality. Green Chemistry, vol 27; issue 18,15 April 2025. DOI: https://doi.org/10.1039/d4gc02440k

This work is supported by NSF MCB 2229160, and U.S. Department of Energy BETO (Bioenergy Technologies Office) projects including EE 0007104, DE EE 0008250, and others.

 

Spotlight on technology to protect older Australians from respiratory infections



Flinders University
UV lights fight airborne viruses in aged care homes 

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UV lights fight airborne viruses in aged care homes, Flinders University

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Credit: Flinders University





Simple technology that harnesses ultraviolet light to ‘zap’ airborne viruses has been shown to significantly lower the number of respiratory infections in aged care facilities, paving the way for smarter infection control.

Adapted by scientists from Flinders Health and Medical Research Institute  (FHMRI) and SAHMRI, the technology is based on using germicidal ultraviolet (GUV) appliances which purify the air with UV-C light rays and deactivate harmful micro-organisms like viruses and bacteria.

The new study published in JAMA Internal Medicine trialled commercially-available GUV appliances in aged care facilities finding they reduced rates of viral respiratory infections in vulnerable older Australians by more than 12%.

“Some of the key advantages of germicidal ultraviolet air-treatment appliances are that they are easily installed into existing facilities and cost effective to use,” says lead author Dr Andrew Shoubridge from Flinders University and SAHMRI’s Microbiome and Host Health Programme.

“When used in conjunction with existing infection control measures, they could be transformative in reducing rates of seasonal respiratory viral infections and protecting residential aged care facilities against emerging pathogens.”

Senior author of the study, Professor Geraint Rogers conceived this world-first trial and the transformative adaptation of this technology to reduce respiratory viral outbreaks in vulnerable older Australians.
“Outbreaks of viruses such as COVID-19 are absolutely devasting for older people, significantly increasing the risks of hospitalisation and death,” says Professor Rogers.

“Our study aimed to explore new ways in which to protect aged care residents from harmful outbreaks of viruses, including COVID 19, without disrupting their day-to-day activities.

“Based on our findings, it’s difficult to see why you wouldn’t install these appliances in aged care facilities.”

The trial tested commercially available LAF Technologies GUV appliances that are already used in a wide range of clinical and commercial settings, including hospitals.

The appliances can be mounted to ceilings or walls, fitted into ventilated AC systems, are harmless to people, and already proven to reduce levels of airborne pathogens in laboratory and hospital settings.

The appliances were installed and tested in four aged care homes across metropolitan and rural South Australia in communal areas that were exposed to high volumes of people where the transmission of airborne viruses is usually greater.

“We designed a randomised clinical trial to compare the same environments with and without the appliances tracking infection rates over two years,” says Dr Shoubridge.

“While the appliances didn’t seem to lower infection rates during short study periods, they did help reduce overall numbers of respiratory infections by 12.2%, or roughly 0.3 fewer cases per week. 

“This means GUV technology could make a noticeable difference in protecting people in aged care facilities, especially when we consider there are 250,000 Australians currently living in them,” he says.

Professor Rogers says that whilst older people are particularly vulnerable to acute respiratory diseases, this technology could be hugely significant in reducing the burden of viral infections in other contexts and in helping prepare for future pandemics.

The study included a number of aged care facilities and collaborations between Flinders Health and Medical Research Institute (FHMRI) and SAHMRI.

Full list of collaborating aged care facilities:

  • Barmera Health Service Residential Aged Care Facility (RACF), Riverland Mallee Coorong Local Health Network (RMCLHN)
  • Allambi Residential Care Home (Eldercare)
  • Lightsview Residential Care Home (Helping Hand)
  • Golden Grove Residential Care Home (Helping Hand)

The article, ‘Germicidal UV Light and Incidence of Acute Respiratory Infection in Long-Term Care for Older Adults: A Randomized Clinical Trial’ by Andrew P. Shoubridge, Amanda Brass, Maria Crotty, Lidia Morawska, Scott C. Bell, Erin Flynn, Caroline Miller, Yiming Wang, Carol A. Holden, Megan Corlis, Nicolas Larby, Paul Worley, Levi Elms, Sarah K. Manning, Ming Qiao, Maria C. Inacio, Steve L. Wesselingh, Lito E. Papanicolas, Richard J. Woodman, Steven L. Taylor and Geraint B. Rogers as published in JAMA Intern Med, 2025.

DOI: 10.1001/jamainternmed.2025.3388

Acknowledgements: The study was supported by a Medical Research Future Fund grant from the Australian Government (GNT2016047). G.B.R. discloses support for the research of this work from a Matthew Flinders Professorial Fellowship. M.I. discloses support for the research of this work from a NHMRC Investigator Grant (GNT119378). S.L.T was supported by an NHMRC Investigator Grant (GNT2008625). C.M. was supported by NHMRC Investigator Grant (GNT1195421).

There’s something in the air


Changes in female body odor during ovulation elicit measurable reactions in men



University of Tokyo

Something in the air 

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Visual representation of body odor compounds increasing during ovulation.

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Credit: ©2025 Touhara et al.




Researchers at the University of Tokyo explored how female body odor can influence behaviors in men. They found certain scent compounds in female body odor increased during ovulation and can subtly influence how men feel. When these scents were added to armpit odor samples, men rated them as more pleasant and faces associated with the samples as more attractive. The scents also seemed to reduce stress. The team states this is not evidence of pheromones in humans, but that smell might subtly shape how we people interact.

While they’re a common staple of pop culture, especially in romantic comedies, pheromones, behavior-altering compounds shared between organisms, might make for fun storylines, but they have not been demonstrably proven to exist in humans. However, a new study by the Department of Applied Biological Chemistry and the International Research Center for Neurointelligence (WPI-IRCN) at the University of Tokyo does show something measurable and interesting is happening analogous to the idea of pheromones.

“We identified three body odor components that increased during women’s ovulatory periods. When men sniffed a mix of those compounds and a model armpit odor, they reported those samples as less unpleasant, and accompanying images of women as more attractive and more feminine,” said Professor Kazushige Touhara. “Furthermore, those compounds were found to relax the male subjects, compared to a control, and even suppressed the increase in the amount of amylase (a stress biomarker) in their saliva. These results suggest that body odor may in some way contribute to communication between men and women.”

Previous studies by different groups already discovered that female body odor changes throughout the menstrual cycle and that the changes in the ovulatory phase can be perceived by men and are reported as being pleasant. But the specific nature of these odors went unidentified and is something this latest study managed to achieve. To do this, Touhara and his team used a technique for chemical analysis called gas chromatography-mass spectrometry and identified volatile compounds that fluctuate across menstrual cycle phases.

“The most difficult part of the study was to determine the axillary (armpit) odor profile within a woman's menstrual cycle. Of particular difficulty was scheduling more than 20 women to ensure that axillary odors were collected at key times during their menstrual cycles,” said first author Nozomi Ohgi, a graduate student in Touhara’s lab at the time of the study. “We also needed to interview each participant frequently regarding body temperature and other indicators of the menstrual cycle in order to understand and track their status. This required a great deal of time, effort and careful attention. It took more than one month per participant to complete the collection within the menstrual cycle, so very time consuming.”

Another challenge the researchers faced was to ensure the tests were done “blind,” meaning the participants did not receive any hints about what they were smelling or why, with some participants being given nothing at all as a measure of control. This way, psychological factors and expectations can be reduced or eliminated. Outside the experiment itself lies another issue, that the nature of this study might encourage some people to think this is evidence of pheromones, which are known to steer behaviors in some animals, including mammals.

“We cannot conclusively say at this time that the compounds we found which increase during the ovulation period are human pheromones. The classical definition of pheromones is species-specific chemical substances that induce certain behavioral or physiological responses,” said Touhara. “But from this study, we can’t conclude whether the axillary odors are species-specific. We were primarily focused on their behavioral or physiological impacts, in this case, the reduction of stress and change in impression when seeing faces. So, at this moment, we can say they may be pheromonelike compounds.”

The team plans to explore further dimensions to this research, including broadening the kinds of people involved to eliminate the chance of a specific genetic trait influencing results, performing deeper chemical analysis, and looking at how ovulatory compounds might affect the active areas in the brain related to emotion and perception.

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Research paper: Nozomi Ohgi, Mika Shirasu, Yusuke Ogura, Yukei Hirasawa, Masako Okamoto, Rieko Kawamura, Hirosato Takikawa, Kazushige Touhara, “Human ovulatory phase-increasing odors cause positive emotions and stress-suppressive effects in males,” iScience, July 28, 2025, DOI: 10.1016/j.isci.2025.113087


Funding: This work was supported by the ERATO Touhara Chemosensory Signal Project to K.T. (JPMJER1202), the JST Mirai program to K.T. (JPMJMI17DC and JPMJMI19D1), and JSPS KAKENHI grants (18K14651 and 22K06418 to M.S.; 21K13546 to Y.H.; 18K02477, 18H04998 and 21H05808 to M.O.; and JP18H05267 and JP23H05410 to K.T.), and Grant for Women Scientists in Challenging Research by Japan Society for Bioscience, Biotechnology, and Agrochemistry (JSBBA) to M.S.

Patent application: A patent application has been filed under PCT Application No. PCT/JP2024/024888, based on the results of this study.

Useful links:

Department of Applied Biological Chemistry

https://www.bt.a.u-tokyo.ac.jp/english/introduction/

 

Laboratory of Biological Chemistry

https://www.biochem.ch.a.u-tokyo.ac.jp/en/


Research Contact:

Professor Kazushige Touhara

Department of Applied Biological Chemistry, The University of Tokyo,

1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, JAPAN
ktouhara@g.ecc.u-tokyo.ac.jp


Press contact:
Mr. Rohan Mehra
Strategic Communications Group, The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
press-releases.adm@gs.mail.u-tokyo.ac.jp
 

About The University of Tokyo:

The University of Tokyo is Japan's leading university and one of the world's top research universities. The vast research output of some 6,000 researchers is published in the world's top journals across the arts and sciences. Our vibrant student body of around 15,000 undergraduate and 15,000 graduate students includes over 5,000 international students. Find out more at www.u-tokyo.ac.jp/en/ or follow us on X (formerly Twitter) at @UTokyo_News_en.