Worldwide Use of Wearable Healthcare Technology Could Rise Nearly 42-Fold by 2050, Study Finds
Key Takeaways:
- Global use of wearable healthcare devices could rise almost 42-fold by 2050, reaching close to two billion units annually.
- Non-invasive continuous glucose monitors are projected to dominate the market, accounting for nearly three-quarters of all wearable healthcare devices by mid-century.
- Without changes in design and manufacturing, this growth could carry a substantial environmental cost, including rising carbon emissions, ecotoxicity, and electronic waste.
Rapid global expansion of wearable health technologies
The global use of wearable healthcare technologies is projected to increase dramatically by 2050, according to a new analysis conducted by researchers from Cornell University and the University of Chicago. The study estimates that annual consumption of wearable health devices could approach two billion units worldwide by mid-century, representing an almost 42-fold increase compared with current levels.
The analysis, published in the journal Nature, focuses on a range of wearable healthcare technologies, including continuous glucose monitors, electrocardiogram (ECG) devices, blood pressure monitors, and point-of-care ultrasound patches. While these technologies offer significant potential benefits for clinical monitoring and disease management, the researchers warn that their rapid expansion could come with a sizable environmental footprint if sustainability is not addressed early in the innovation process.
Environmental impact and carbon emissions
The researchers estimate that the projected global use of wearable healthcare devices could generate approximately 3.4 metric tonnes of carbon dioxide equivalent emissions each year by 2050. In addition to greenhouse gas emissions, the study raises concerns about increasing ecotoxicity and the accumulation of electronic waste associated with large-scale deployment of these devices.
China is expected to contribute the highest share of annual greenhouse gas emissions linked to wearable healthcare electronics by mid-century, followed by India. These projections reflect both population size and anticipated growth in access to digital health technologies, particularly in rapidly developing economies.
Life cycle assessment of wearable devices
To quantify environmental impacts, the researchers used a life cycle assessment approach, examining each stage of a device’s lifespan. This included raw material extraction, component manufacturing, device assembly, use during its operational life, and eventual disposal.
Their analysis found that a single wearable healthcare device can emit between 1.1 and 6.1 kilograms of carbon dioxide equivalent over its lifetime, depending on the type of device and its specific design characteristics. Differences in sensing technology, materials, power requirements, and expected duration of use all influenced the overall environmental burden.
Devices included in the analysis
Four representative wearable healthcare devices were assessed in detail:
- A non-invasive continuous glucose monitor
- A continuous electrocardiogram (ECG) monitor
- A wearable blood pressure monitor
- A point-of-care ultrasound patch
These devices were selected based on their clinical relevance, diversity of sensing modalities, and representation of different stages of technological maturity within the wearable health sector.
Shifting market dynamics towards continuous glucose monitoring
At present, the wearable healthcare market is largely dominated by continuous ECG and blood pressure monitoring devices. However, the study projects a major shift in device usage patterns over the coming decades.
By 2050, non-invasive continuous glucose monitors are expected to account for approximately 72 percent of global wearable healthcare device use. Continuous ECG monitors are projected to represent 19 percent of usage, while blood pressure monitors are expected to make up around eight percent.
The researchers noted that by mid-century, annual global sales of non-invasive continuous glucose monitors alone could exceed current worldwide smartphone sales, which were estimated at 1.2 billion units in 2024.
Limited gains from bioplastics, greater potential from design changes
The study also explored potential strategies to reduce the environmental impact of wearable healthcare technologies. The researchers found that switching to recyclable or biodegradable plastics provides relatively limited environmental benefits when considered across the full device lifecycle.
In contrast, more substantial reductions in emissions could be achieved by replacing critical-metal conductors, optimising circuit architectures, and improving overall electronic design. Importantly, these changes could lower environmental impacts without compromising device performance or clinical functionality.
Supporting more sustainable digital health innovation
The researchers concluded that their engineering-based framework for assessing environmental impacts across a wearable device’s lifecycle could help guide more ecologically responsible innovation in next-generation healthcare electronics.
As wearable health technologies continue to expand rapidly across global healthcare systems, the study highlights the importance of integrating sustainability considerations into design, manufacturing, and scale-up processes from the outset, rather than treating environmental impact as a secondary concern.
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Digital Tools Show Promise in Schizophrenia Care, Large-Scale Study Finds
Key Takeaways:
- A smartphone app, FOCUS, helped people living with schizophrenia manage symptoms and recovery more effectively.
- External facilitation by digital specialists improved outcomes, including reduced psychiatric emergency visits.
- Researchers highlight that the greatest challenge for digital mental health tools remains real-world adoption.
Evidence grows for mobile mental health support
A major clinical study has found that using a smartphone app to support the treatment of schizophrenia can deliver modest but meaningful improvements in symptoms and recovery outcomes. The research, published in Psychiatric Services, is among the largest trials of its kind examining the impact of digital interventions on people with serious mental illness.
While the research took place in the United States, its findings are relevant globally as health systems, including the NHS, seek innovative ways to expand access to mental healthcare and support self-management outside the clinic.
The FOCUS app: bridging the gap between appointments
The FOCUS app was first launched in 2013 to provide digital support for people living with schizophrenia and related conditions. It offers structured prompts and tools to help users manage symptoms, take medication consistently, improve sleep routines, and practise social and coping skills.
Previous small-scale studies showed early promise, but uptake within mental health services has been limited, reflecting wider challenges in embedding digital tools into routine care.
Comparing models of implementation
The new trial enrolled 274 people receiving care for schizophrenia across 23 community clinics. It tested two models of introducing the FOCUS app into clinical practice:
- External facilitators – digital health specialists who supported multiple clinics and provided guidance to both staff and patients.
- Internal facilitators – trained in-house staff who integrated app use within their own teams and services.
Both methods proved feasible, but patients supported by external facilitators experienced better clinical outcomes, including fewer psychiatric emergency attendances.
Digital tools and the challenge of adoption
“Getting access to a mental health provider can be challenging for patients with serious mental illness,” said Dr Dror Ben-Zeev, clinical psychologist, director of UW Medicine’s BRiTE Center, and the study’s lead author. “Mobile health tools hold enormous potential because we can meet patients where they are. The biggest hurdle today for digital mental health solutions is effective implementation and real-world adoption.”
Each participant in the study was paired with a digital navigator, who had access to the individual’s app data, conducted weekly check-in calls, and communicated key updates to the person’s clinical team.
Ensuring digital solutions deliver real results
“There are so many digital solutions being offered right now,” commented Dr Charissa Fotinos, Washington State Medicaid and behavioural health medical director, who served as an advisor on the project. “It’s important for us, as a payor, to support tools that have evidence of efficacy. We need to pay for things that work.”
Her remarks echo a growing sentiment among UK health commissioners and policymakers: while digital mental health tools hold promise, investment must prioritise those that have been proven to work in practice, not just in theory.
Towards a future of evidence-based digital psychiatry
The study forms part of mHealth Washington, a multi-year programme funded by the National Institute of Mental Health, developed in collaboration with the University of Washington School of Medicine and the Washington State Health Care Authority.
Researchers emphasised the wider relevance of their findings to healthcare systems internationally. As the NHS continues to expand its use of digital therapy tools, from remote cognitive behavioural therapy to AI-assisted triage, evidence such as this may help shape best practice for integrating digital interventions into routine psychiatric care.
Conflict-of-interest statements for the study authors are available in the published paper.
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Study Finds Early Virtual Follow-Up Reduces Hospital Readmissions and Enhances Recovery
Key Takeaways:
- A UC San Diego Health telemedicine clinic reduced 30-day hospital readmissions from 20.1% to 14.9% among high-risk patients.
- The clinic provides rapid, virtual follow-up care after discharge, addressing medication access, care understanding, and specialist coordination.
- Findings suggest that virtual post-discharge care can improve health outcomes, cut costs, and enhance care equity.
Virtual care reduces readmissions in high-risk patients
A new study led by researchers at the University of California San Diego (UC San Diego) School of Medicine has found that a virtual transition of care clinic significantly reduces hospital readmissions among high-risk patients.
Published on 23 September 2025 in JMIR Medical Informatics, the study revealed that the 30-day readmission rate for patients seen in UC San Diego Health’s virtual transition of care clinic was 14.9%, compared with 20.1% in a benchmark group that received standard follow-up care.
“With our virtual transition of care clinic, we are providing patients with the right care, at the right place, at the right time,” said Dr Sarah Horman, lead author of the study and Professor of Medicine at UC San Diego School of Medicine. “With the convenience of meeting virtually, we’re able to reach patients much more efficiently.”
Tackling a national challenge
Hospital readmissions represent a major strain on healthcare systems across the United States, with an estimated annual cost of $17 billion. Recognising this challenge, UC San Diego Health clinicians and leadership launched the virtual clinic in 2021 to improve care coordination immediately following discharge.
The initiative supports clinical management and specialist referrals for people leaving hospital, aiming to reduce the likelihood of complications or unplanned readmissions.
How the virtual transition clinic works
The clinic operates with a team of 12 hospitalists, two medical assistants, one pharmacist, and an on-demand interpreter service. When necessary, visits were converted to telephone consultations to accommodate patients facing technical or connectivity barriers.
Each discharge triggers a standardised hand-off to the patient’s primary care provider and relevant specialists, summarising the reason for admission, ongoing care needs, and follow-up recommendations.
If a patient experienced issues post-discharge, the virtual care team expedited communication with the primary care provider to ensure timely in-person review.
Addressing barriers to follow-up care
“When telemedicine first began, there was concern it would further increase health disparities, especially in vulnerable patient groups,” said Dr Horman, who is also a hospitalist and affiliate faculty member at the Joan and Irwin Jacobs Center for Health Innovation at UC San Diego Health. “However, through our research, we have found the opposite as the virtual clinic reaches patients more effectively.”
Many individuals, she noted, struggle to attend in-person follow-up appointments due to transport issues or mobility limitations. “For example, many patients do not have access to transportation for in-person follow-up visits, so they will often skip them altogether, resulting in an increased risk of hospital readmission. For patients who did not have access to video visits, we coordinated telephone calls instead. In total, the no-show rate for these follow-up visits was less than 5%.”
Strengthening the post-hospital care chain
According to Dr Horman, the clinic targets three critical aspects of post-discharge care:
- Ensuring access to and availability of prescribed medications.
- Supporting patient and caregiver understanding of the care plan.
- Facilitating navigation between primary and specialist care.
“Our goal is to hardwire this linkage in the care chain between the hospital team and primary care in order to help expedite support during that very sensitive, post-hospital period of time,” she explained. “As a result, patient outcomes are improving while they recover at home and hospitals have capacity to take care of the next patient in need of critical care.”
Study scope and findings
The study evaluated more than 25,000 patients discharged from UC San Diego Health between 1 September 2021 and 17 September 2024. Of these, 2,314 were seen in the virtual clinic, while 23,129 received standard care.
Typically, patients see their primary care provider two to four weeks after discharge. However, under this programme, individuals at moderate or high risk were seen within one week.
“Our clinic is a one-time, virtual visit with a patient immediately after their hospital stay to ensure we’re doing all we can to mitigate risk,” added Dr Horman.
Data-driven patient targeting with the LACE+ index
The team used the LACE+ index to identify patients at high risk of readmission or complications. LACE stands for Length of stay, Acuity of admission, Comorbidity, and Emergency department visits. The “+” extends the model to include factors such as age, sex, and previous hospitalisations.
“The use of LACE+ underscores the importance of data-driven and patient-centric strategies in enhancing patient outcomes,” said Dr Horman. “By using this tool, we were able to target follow-up care to those most likely to benefit. This approach helped improve care transitions and reduce avoidable hospital visits.”
Future of the programme
UC San Diego Health’s virtual transition of care clinic continues to operate across Hillcrest and Jacobs Medical Centers, with expansion plans to include East Campus Medical Center.
Dr Horman noted that these findings demonstrate how telemedicine can contribute to broader goals of improving population health, enhancing patient experience, reducing healthcare costs, and advancing care equity.
The study’s co-authors include Milla Kviatkovsky, Edward Castillo, Patricia S. Maysent, Chad VanDenBerg, John Bell, and Christopher A. Longhurst, all from UC San Diego Health.
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