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Withings

Withings is a French consumer electronics company headquartered in Issy-les-Moulineaux, specializing in connected health and wellness devices that monitor metrics such as body composition, cardiovascular health, sleep patterns, and activity levels. Founded in 2008 by inventor Eric Carreel, Withings pioneered the world's first Wi-Fi-connected body scale in 2009, revolutionizing personal health tracking by enabling seamless data synchronization with apps and healthcare platforms. The company's product lineup includes smart scales like the Body Cardio and Body Scan for advanced body composition analysis, hybrid smartwatches such as the ScanWatch series with ECG and SpO2 monitoring, blood pressure monitors, thermometers, sleep analyzers, and innovative devices like the U-Scan for urinary health insights. In 2025, Withings received FDA clearance for its BeamO multiscope device and launched the Cardio Check-Up service. Withings emphasizes clinically validated technology, with many devices cleared by regulatory bodies like the FDA for medical-grade accuracy. In 2016, Withings was acquired by Nokia for approximately €170 million to expand Nokia's digital health portfolio, leading to temporary rebranding and integration efforts. Two years later, in 2018, Nokia sold the business back to founder Eric Carreel for an undisclosed sum, restoring Withings' independence and focus on consumer-centric innovation. Since then, Withings has grown through strategic acquisitions, including Impeto Medical for nerve health diagnostics and 8fit for nutrition coaching in 2022, while securing €60 million in funding in 2020 to fuel research and development. Withings operates globally with offices in Paris, Boston, Hong Kong, and Shenzhen, serving both individual users and healthcare professionals through its Withings Health Solutions division. The company's mission centers on empowering preventive healthcare by making reliable, user-friendly technology a seamless part of daily life, earning accolades such as numerous CES Innovation Awards (over 20 as of 2025) and multiple IF Design Awards for its blend of aesthetics and functionality.

History

Founding and Early Innovations (2008–2015)

Withings was founded in June 2008 in Issy-les-Moulineaux, France, by engineers Éric Carreel, Cédric Hutchings, and Fred Potter, with a focus on developing connected health devices that integrate seamlessly into daily life to promote preventive healthcare. The company's origins stemmed from the founders' prior experience in telecommunications and technology, aiming to bridge consumer electronics with medical-grade monitoring through wireless connectivity. The company's breakthrough came in 2009 with the launch of the Wi-Fi Body Scale, the world's first connected smart scale, which allowed users to automatically sync weight measurements to online platforms for tracking trends and sharing data. This device emphasized preventive health by encouraging regular weigh-ins without manual input, setting Withings apart in the emerging Internet of Things (IoT) space for personal wellness. Following this, Withings expanded its portfolio in 2011 with the Wi-Fi Blood Pressure Monitor, the first connected device of its kind, which connected directly to smartphones for real-time readings and historical analysis, blending sleek, minimalist design with clinical accuracy validated by health standards. By 2013, Withings introduced the Pulse activity tracker, a compact wearable that monitored steps, heart rate, and sleep patterns, further embodying the company's design philosophy of aesthetic appeal—resembling a stylish clip rather than bulky tech—while prioritizing precise sensors for reliable health insights. Growth accelerated with FDA clearance for the Blood Pressure Monitor in 2011, enabling robust entry into the U.S. market alongside its established European presence, and international expansion that saw products available in major retailers by 2012. Funding supported this phase, including a €3 million seed round in 2010 from Ventech and a €23.5 million Series A in 2013 led by Bpifrance, totaling approximately €26.5 million by 2014 to fuel product development and global scaling. Early years presented challenges, including intense competition from nascent fitness trackers like Fitbit and Jawbone entering the market around 2010–2012, which pressured Withings to differentiate through superior integration and design. Additionally, the company navigated growing concerns over data privacy in connected devices, committing to aggregated, anonymized sharing of user metrics while adhering to emerging regulations to build trust in an era of increasing IoT vulnerabilities. These hurdles underscored Withings' emphasis on secure, user-centric innovation during its formative growth.

Nokia Acquisition and Integration (2016–2018)

On April 26, 2016, Nokia announced its acquisition of Withings for €170 million (approximately $191 million) in cash, with the deal closing on June 1, 2016, after receiving regulatory approvals. This move integrated Withings into Nokia Technologies' newly formed Digital Health unit, aimed at expanding Nokia's presence in consumer health and fitness technologies by leveraging Withings' established portfolio of connected devices. The acquisition was part of Nokia's broader strategy to diversify beyond telecommunications into digital health, building on Withings' innovations in wearable and home monitoring hardware. Following the acquisition, Nokia initiated rebranding efforts to align Withings' products under the Nokia name, with the transition beginning in February 2017 and completing by June 2017. This included sunsetting the Withings brand and relaunching devices like the Steel HR hybrid smartwatch under Nokia branding, though the watch faced delays of several months due to quality assurance issues during integration. Operational challenges emerged, including layoffs within Nokia's Digital Health division; by early 2018, the company announced cuts of over 400 positions in Finland as part of a strategic review, reflecting broader restructuring efforts amid underperformance. These changes disrupted internal workflows and contributed to delays in product development and launches. During this period, Nokia released key products building on Withings' foundations, such as the Nokia Body+ smart scale in June 2017, which provided body composition metrics including fat, muscle, and water percentages, and the Nokia BPM+ blood pressure monitor, a compact, FDA-cleared device for systolic and diastolic readings launched the same year. Nokia's global resources facilitated faster regulatory processes, including FDA clearance for the BPM+, enabling quicker market entry for these medical-grade devices compared to Withings' pre-acquisition timeline. However, the integration shifted emphasis toward Nokia's ecosystem priorities, which some observed diluted Withings' original focus on elegant, user-centric design in favor of standardized hardware approaches. Cultural and operational tensions arose over product direction, with Withings co-founder Éric Carreel, who remained an advisor post-acquisition, publicly expressing concerns about Nokia's limited engagement with health-specific innovation. In interviews, Carreel criticized Nokia's approach for not delving deeply enough into advanced health measurements, stating that the company was "very occupied" elsewhere and lacked the hardware expertise to fully nurture the division's potential. These conflicts highlighted mismatches between Nokia's corporate structure and Withings' startup agility, contributing to strategic misalignment. In the broader financial context, Nokia's Digital Health unit faced scrutiny; in October 2017, the company announced a €150 million ($164 million) impairment charge on the business due to slower-than-expected growth projections, signaling a pivot in strategy. This was followed by a February 2018 strategic review exploring options like divestiture, as Nokia refocused on core licensing and telecommunications amid the unit's challenges in achieving scale within a large corporate entity.

Repurchase and Expansion (2018–Present)

On May 31, 2018, Nokia completed the sale of its Digital Health business back to Éric Carreel, the co-founder and former chairman of Withings, along with a group of new investors including Bpifrance and Closed Loop Capital, allowing the company to regain independence after two years of integration challenges under Nokia ownership. The transaction, for an undisclosed amount, included approximately 200 employees and enabled the restoration of the original Withings brand name and leadership team, with Carreel resuming his role as CEO to refocus on the company's core mission in connected health. Following the repurchase, Withings adopted a strategy centered on building a premium connected health ecosystem, emphasizing preventive care through integrated devices and software while expanding its global footprint. The company reported revenue growth, reaching $118 million in 2024, reflecting a doubling from earlier post-acquisition levels amid a shift toward business-to-business solutions and international markets. This included targeted expansion into Asia, with an office in Hong Kong, and Latin America, supporting broader distribution and localization efforts to reach emerging consumer bases in preventive health monitoring. In July 2020, Withings secured a $60 million Series B funding round led by investors such as Shift Capital and Bpifrance to accelerate product development and B2B partnerships, further fueling this growth trajectory. In 2022, Withings acquired Impeto Medical to advance nerve health diagnostics and 8fit to enhance nutrition and fitness coaching within its ecosystem. Key milestones in this period included the 2020 launch of the ScanWatch, a hybrid smartwatch featuring FDA-cleared electrocardiogram (ECG) capabilities for atrial fibrillation detection, which received full U.S. regulatory approval in October 2021. In 2023, Withings introduced the U-Scan, a pocket-sized urinalysis device designed for at-home health tracking of biomarkers like hydration and metabolic indicators. The company further advanced cardiac care with the 2024 rollout of the Cardio Check-Up service, offering 24-hour cardiologist reviews of ECG and vital data for arrhythmia detection. At CES 2025, Withings unveiled significant advancements, including the BPM Vision, an AI-powered upper-arm blood pressure monitor with clinical-grade accuracy and a large color display for guided measurements, priced at $129.95 and scheduled for U.S. launch in April 2025 following FDA clearance. Additionally, the company showcased the Omnia concept, an AI-enabled smart mirror integrating full-body health scanning, body composition analysis, and vital metrics in a sleek, interactive design to demonstrate future possibilities in at-home health ecosystems. In November 2025, Withings received FDA clearance for and launched BeamO in the United States, a multiscope device enabling comprehensive at-home health checks including ECG, oximetry, stethoscope, and thermometer functions. By 2025, Withings had grown its workforce to approximately 400 employees across offices in France, the U.S., and Asia, underscoring its expanded operations. The company has prioritized sustainability, incorporating recycled materials such as ocean plastic in watch straps and at least 65% recycled content in product packaging, with initiatives like the limited-edition Body Smart scale for the 2024 Paris Olympics made from recycled components. Furthermore, Withings has forged partnerships with health insurers and providers, enabling reimbursement for remote patient monitoring services under programs like chronic condition management, where private payers cover eligible device usage and data tracking for preventive care.

Products

Wearables

Withings' wearables primarily consist of hybrid smartwatches and fitness trackers designed for continuous health monitoring while maintaining a traditional analog aesthetic. The ScanWatch series, launched in 2019, exemplifies this approach with models featuring mechanical hands overlaying a small OLED display for notifications and data glances. These devices incorporate medical-grade sensors for electrocardiogram (ECG) recordings, blood oxygen (SpO2) measurements, and atrial fibrillation (AFib) detection, with the original ScanWatch receiving FDA clearance in 2021 for ECG and SpO2 functionalities to aid in identifying AFib and respiratory disturbances. Battery life extends up to 30 days on a single charge, supported by Bluetooth connectivity for seamless synchronization with iOS and Android devices via the Withings Health Mate app. The ScanWatch lineup has evolved to include advanced features in subsequent iterations, such as the ScanWatch 2 released in 2023, which added a temperature sensor for monitoring variations indicative of cycle tracking or early illness detection. This model maintains the hybrid design philosophy, blending Swiss-made mechanical movements with digital health insights, and supports 24/7 heart rate monitoring using optical photoplethysmography (PPG) sensors. By 2025, the ScanWatch 2 edition introduced vascular age estimation through pulse wave analysis, providing users with a biological assessment of arterial health compared to chronological age. The Pulse series complements the smartwatches with more compact fitness trackers, such as the Pulse HR introduced in 2019, which offers lightweight wrist-worn tracking of heart rate, sleep stages, and elevation via connected GPS for activities like running or hiking, all within a water-resistant (5 ATM) casing. These wearables emphasize user benefits through comprehensive, passive monitoring that minimizes disruption to daily routines. They track activity metrics including steps, calories, and altitude changes, alongside detailed sleep analysis for duration, quality, and disturbances, with heart rate accuracy validated in clinical studies showing low mean absolute percentage errors during rest and moderate activities. For instance, the ScanWatch demonstrated reliable performance against reference devices in free-living scenarios, making it suitable for ongoing wellness oversight. Integration with the Health Mate app allows brief data syncing for holistic views, though the devices prioritize on-wrist insights. Withings positions its wearables as a premium alternative to fully digital smartwatches like the Apple Watch, appealing to users seeking longevity and subtlety in design without sacrificing clinical-grade features. The hybrid format has contributed to strong market reception, with the ScanWatch series earning recognition for its balance of style and substance in health tracking.

Body Composition and Scales

Withings pioneered the smart scale category with the launch of its Wi-Fi Body Scale in 2009, which introduced wireless connectivity for automatic weight tracking and syncing to a companion app, marking the beginning of connected body monitoring devices. This foundational product focused on precise weight measurement using four high-precision sensors, setting the stage for subsequent advancements in body composition analysis. Over the years, Withings has evolved its lineup to incorporate bioelectrical impedance analysis (BIA), enabling estimates of fat mass, muscle mass, and other metrics beyond simple weight. The Body Cardio, introduced in 2016, represented a significant upgrade by integrating multi-frequency BIA for body composition metrics including body fat percentage, muscle mass, water percentage, and bone mass, alongside pulse wave velocity (PWV) measurements to assess arterial stiffness as an indicator of cardiovascular health. Building on this, the Body+ scale, released in 2017, emphasized multi-user support for up to eight profiles with automatic recognition via Wi-Fi and Bluetooth connectivity, measuring weight, body mass index (BMI), fat and muscle mass, water percentage, and bone mass through BIA. These models use a safe, low-level electrical current passed through the body to differentiate between fat, muscle, and other tissues based on impedance. In 2023, Withings unveiled the Body Scan, its most advanced scale to date, featuring segmental BIA for detailed breakdowns of body composition in the arms, legs, and torso, along with nerve health assessment via electrodermal activity and vascular age estimation derived from PWV. The Body Scan includes a detachable handle that enables 6-lead electrocardiogram (ECG) recordings during weigh-ins, providing atrial fibrillation detection cleared by the FDA. By 2025, updates to the Withings Health Mate app integrated AI-driven insights, such as metabolic age calculations based on basal metabolic rate trends from body composition data, to offer personalized health recommendations. Withings scales employ patented Position Control technology, which uses visual and haptic feedback to guide users into an optimal stance for consistent readings, compensating for posture variations that could skew results by up to 5% in traditional scales. Weight measurements across models achieve precision within 50 grams (0.1 kg), with body composition estimates compared to reference methods like dual-energy X-ray absorptiometry (DEXA) in clinical studies, showing limitations in precision for individual diagnostics though useful for tracking long-term trends. These scales support applications in weight management and athletic training by tracking long-term trends rather than absolute values. Additional features enhance usability, including pregnancy mode that disables BIA for safety while tracking weight gain, baby weighing mode for holding infants, and compatibility with up to eight users per device for family or shared household monitoring. All models sync data seamlessly to the Health Mate app for trend visualization, with optional integration to over 100 third-party health platforms.

Specialized Health Monitors

Withings has developed several non-wearable devices focused on monitoring specific vital signs and sleep patterns, enabling users to track targeted health metrics at home without invasive wearables. The BPM Connect, introduced in 2021, is an FDA-cleared connected blood pressure monitor that uses the oscillometric method to measure systolic and diastolic pressure along with heart rate, providing immediate color-coded feedback aligned with American Heart Association (AHA) guidelines for hypertension classification. This device features Wi-Fi and Bluetooth connectivity for seamless data syncing to the Withings app, supporting daily monitoring for individuals managing cardiovascular risks. Similarly, the Sleep Analyzer, launched in 2019, is an under-mattress pad that employs ballistocardiography and acoustic sensors to detect sleep apnea and snoring without requiring any wearable components; it received FDA clearance in 2024 for its Sleep Rx variant, which scores obstructive sleep apnea (OSA) events and provides diagnostic aid for moderate-to-severe cases. The U-Scan, debuted in 2022, functions as a pocket-sized urine analysis lab that installs in the toilet bowl, using disposable cartridges to assess hydration levels and screen for urinary tract infections (UTIs) through biomarkers like specific gravity and leukocytes, delivering results via app notifications for proactive health insights. In October 2025, U-Scan became commercially available with Nutrio and Calci cartridges for tracking nutritional parameters such as ketones, vitamin C, and calcium to support dietary and kidney health insights. In early 2025, Withings expanded its offerings with the Cardio Check-Up service, launched in January, which facilitates at-home electrocardiogram (ECG) assessments by integrating user-recorded heart data from compatible devices with reviews by board-certified cardiologists, typically within 24 hours, to evaluate rhythm irregularities and overall cardiac health. Complementing this, the BPM Vision, released in April 2025, is an AI-enhanced blood pressure monitor with a detachable cuff and large color display for guided measurements, achieving clinical-grade accuracy through advanced oscillometric algorithms and offering trend analysis for hypertension management. On November 13, 2025, Withings received FDA clearance for the BeamO, a multiscope device that measures body temperature, heart rate, blood oxygen, and lung sounds in under a minute, revolutionizing at-home family health checks and telehealth consultations. These devices support remote patient monitoring (RPM) programs for chronic conditions such as hypertension and sleep disorders, allowing secure data export to electronic health record (EHR) systems like Epic and Cerner for clinician oversight and timely interventions. A notable innovation in Withings' lineup is the integration of the first home-use electrodermal activity (EDA) sensor in its 2023 advanced scales, which measures skin conductance in the feet to detect stress responses and autonomic nervous system activity, providing non-invasive insights into emotional and physiological strain without additional wearables.

Software Ecosystem

The Withings app, originally launched as the Health Mate app in 2010 for iOS and Android platforms, serves as the central dashboard for users to sync data from compatible Withings devices, visualize trends through interactive graphs, and access health scores such as CardioFitness, which estimates VO2 max to assess cardiovascular endurance. This app aggregates metrics like activity, weight, sleep, heart rate, and body composition into a unified interface, enabling users to monitor long-term progress and receive notifications for potential health insights. Key features include AI-powered coaching tailored to goals such as weight loss, delivered through Withings Intelligence, which provides real-time insights, trend analysis, and personalized recommendations to encourage behavioral changes. The app also supports family sharing, allowing multi-user profiles where adults can securely share selected measurements like weight or activity data with relatives or physicians via the Share tab, facilitating connected household health management. Additionally, it integrates with over 100 third-party apps and services, including Apple Health for seamless data syncing of metrics like steps and sleep, though support for Google Fit was discontinued in May 2024 due to platform updates. The app has evolved significantly, with the 2023 rebranding from Health Mate to Withings enhancing its interface for better usability and incorporating features like deeper exploration of trends for metrics such as Vascular Age, a cardiovascular indicator comparing arterial health to chronological age peers, originally introduced in 2021 but refined in subsequent updates. In 2025, updates previewed integration with the Omnia concept, an AI-powered health mirror that feeds 360-degree body scans and vital metrics into the app for comprehensive data correlation on heart, lung, and metabolic health. Privacy remains a core focus, with compliance to GDPR for data processing and user controls, alongside HIPAA capabilities for professional health data hosting to ensure secure sharing and storage. Advanced tools are available through the Withings+ subscription service, launched in 2021 at €9.95 per month (or equivalent in local currency), which unlocks personalized AI-driven insights, guided programs for wellness goals, meditation and recovery suggestions via the Vitalité indicator, and exportable doctor reports including board-certified cardiologist reviews of ECG data within 24 hours. By 2025, the app has amassed millions of downloads worldwide, supporting a user base that benefits from behavioral nudges like reminders and challenges, with studies indicating high retention rates—such as 94% of users continuing regular device engagement—driven by its motivational features.

Business-to-Business Solutions

Withings Health Solutions, a dedicated division of the company, focuses on providing enterprise-grade tools for healthcare providers to integrate connected health devices into telehealth and remote monitoring programs. Established following a €60 million funding round in 2020 aimed at expanding B2B operations, the division offers an API platform that enables seamless data access from Withings devices, utilizing OAuth 2.0 for secure authorization and supporting integration with electronic health record (EHR) systems such as Epic, Cerner, Allscripts, and athenahealth. This platform facilitates the collection of vital health metrics, including electrocardiograms (ECG), blood oxygen saturation (SpO2), body composition, and blood pressure, allowing care teams to monitor patient data in near real-time without complex setups. Key partnerships underscore the division's role in clinical and preventive care ecosystems. Collaborations include integrations with Medable for decentralized clinical trials, where Withings devices supply participant data to reduce site burdens and enhance trial efficiency across various therapeutic areas. Additional alliances with organizations such as One Drop for chronic condition management, the American Diabetes Association for education initiatives, and academic institutions like Stanford University, Imperial College London, and Inserm have supported remote studies in areas including cardiometabolic diseases and diabetes prevention. These partnerships enable white-label device deployments and customized monitoring kits tailored for healthcare providers. The division's products emphasize scalability and ease of use for enterprise applications. Remote patient monitoring (RPM) solutions provide turnkey dashboards for tracking health trends, customizable alerts, and team collaboration, supporting chronic disease management programs such as those for heart failure through connected scales and blood pressure monitors. Devices like the cellular-enabled Body Pro scale and BPM Connect Pro are integrated into clinical workflows for real-world data collection in trials, with the platform handling high-volume data synchronization to foster better patient-provider communication. By 2025, these offerings have contributed to studies in over a dozen therapeutic domains, leveraging the consumer Health Mate app as a foundational data pipeline while prioritizing HIPAA-compliant, audit-proof reporting for regulatory adherence. Withings' B2B revenue model centers on licensing API access, volume-based device sales to healthcare organizations, and RPM program support that enables billing under standard CPT codes (e.g., 99453 for setup at $19.32 per patient and 99457 for management at $48.80 per month). This approach has driven adoption among providers seeking scalable digital health tools, with the division powering remote monitoring for thousands of concurrent users through robust cloud infrastructure.

Discontinued and Legacy Products

Withings' early innovations included the Wi-Fi Body Scale, launched in September 2009 as a pioneering connected device that measured weight, BMI, and body fat percentage while transmitting data wirelessly to a companion app. This model, priced at $159, represented a breakthrough in home health monitoring by enabling remote tracking without manual input. It was gradually phased out around 2016 as newer iterations like the Body Cardio introduced advanced metrics such as pulse wave velocity. The Activite series of hybrid smartwatches, introduced in 2014 with models like the Activite Pop at $149, blended analog watch aesthetics with activity tracking, sleep monitoring, and heart rate detection via an optical sensor. These devices offered up to eight months of battery life on a single CR2430 coin cell and were compatible with iOS and Android. Production ceased by 2019, superseded by the ScanWatch line, which incorporated medical-grade features like ECG and SpO2 monitoring absent in the earlier models. The Pulse O2 activity tracker, released in April 2014 for $119.95, marked a significant milestone as the first fitness band to incorporate blood oxygen (SpO2) measurement alongside steps, elevation, calories burned, heart rate, and sleep tracking. This feature, enabled by an integrated sensor, allowed users to assess oxygenation levels during activities like sleep or high-altitude exercise, influencing subsequent wearables with vital sign monitoring. It was discontinued in favor of more integrated hybrid designs post-2016. During Nokia's ownership from 2016 to 2018, products like the Go fitness band—launched in 2016 as a clip-on or wrist-worn tracker with E Ink display, swim-proof design, and 8-day battery life—underwent rebranding but faced obsolescence due to limited advanced health sensors compared to emerging competitors. Support for Nokia-branded devices transitioned back to Withings after the 2018 repurchase, with firmware updates ceasing around 2020 as focus shifted to the revitalized ecosystem; users were encouraged to migrate data via the Health Mate app. Discontinuations in this era often stemmed from the 2017 rebranding, which consolidated the lineup under Nokia and led to the end of production for select legacy items like the Aura sleep tracker. These legacy products played a foundational role in establishing connected health standards, with the Pulse O2 particularly advancing non-invasive respiratory monitoring in consumer devices. Early scales and trackers remain compatible with the current Withings app for data continuity, though without ongoing firmware enhancements beyond 2023 for most models.

Research and Innovations

Core Research Initiatives

Withings established its dedicated research arm, known as the Withings Health Institute, in 2015, focusing on validating connected health devices through partnerships with leading academic institutions such as Stanford University and the French National Institute of Health and Medical Research (INSERM). The institute's initial flagship effort was the Precision Research Challenge, launched in collaboration with Stanford Medicine X, which solicited proposals to investigate how patient-generated data from wearables and home monitors could transform preventive healthcare and clinical outcomes. Earlier collaborations with INSERM, beginning in 2015, emphasized device validation for cardiovascular metrics, including a study demonstrating the blood pressure-lowering effects of increased daily steps tracked via Withings activity monitors. Major research initiatives have centered on long-term evaluations of connected health efficacy, such as EU-supported projects exploring public access to biomedical data and hypertension management through home monitoring scales in the mid-2010s. A notable example is the 2015–2020 period's focus on hypertension, where Withings devices were integrated into studies assessing remote monitoring's role in chronic disease management, funded through European frameworks to promote scalable preventive tools. These efforts built on foundational work from 2011 EU-funded surveys on online health information seeking, evolving into practical applications for daily health tracking. Recent collaborations include a 2024 partnership with the American Heart Association's Center for Health Technology Innovation, aimed at standardizing global health metrics through innovative device integrations, and the expansion of offices in the Boston area—established around 2009—to support development. Withings also contributed to the 2020 StopCovid project with INSERM and partners like Orange, developing contact-tracing technology during the pandemic to support public health responses. The company invests approximately €20 million annually in R&D, with a €20.7 million infusion from the French government in 2024 dedicated to ethical AI advancements in preventive health tech through Project DEEP.

Biomarkers and Health Metrics

Withings devices measure several key physiological biomarkers to provide insights into cardiovascular, neurological, and autonomic health. Pulse Wave Velocity (PWV), introduced in 2016 with the Body Cardio scale, assesses arterial stiffness by calculating the speed at which the pressure wave travels through the arteries, serving as an indicator of cardiovascular risk. This metric was validated against gold-standard methods such as applanation tonometry using the SphygmoCor system, demonstrating strong correlation in clinical studies with mean differences under 0.5 m/s. The Nerve Health Score, launched in 2023 via the Body Scan device, evaluates peripheral autonomic neuropathy by measuring electrochemical skin conductance (ESC) in the feet, often linked to conditions like diabetes. This score uses segmental bioelectrical impedance analysis (BIA) to detect sudomotor dysfunction, with validation studies confirming its sensitivity for small fiber neuropathy detection compared to reference devices. Similarly, Electrodermal Activity (EDA), also introduced in 2023 on models like Body Comp, quantifies autonomic nervous system activity related to stress by monitoring sweat gland responses in the feet. EDA measurements show high correlation with traditional galvanic skin response techniques in laboratory settings, supporting its use for tracking emotional and physiological arousal. These biomarkers rely on non-invasive measurement techniques integrated into Withings' scales and wearables. Bioelectrical impedance analysis (BIA) employs a low-level electrical current, typically at 50 kHz, to estimate body composition parameters such as fat mass and water percentage by analyzing tissue impedance. For sleep-related metrics, ballistocardiography (BCG) captures subtle body movements from heartbeats using embedded sensors, enabling detection of sleep apnea with approximately 90% agreement in severity classification against polysomnography (PSG), the clinical gold standard. Validation efforts include FDA clearances for associated features, such as Class II designation for cardiovascular monitoring components in the Body Scan in 2023, ensuring reliability for at-home use. Clinical trials further substantiate these methods, with PWV showing reproducibility within 10% across repeated measures and EDA/ESC demonstrating over 80% concordance with lab-based assessments in cohort studies. In applications, these biomarkers facilitate early detection of cardiovascular disease (CVD) risks; for instance, elevated PWV values above 10 m/s signal potential arterial aging, computed via the simplified equation PWV = distance / transit time, where distance approximates vascular path length and transit time is derived from pulse arrival differences at the feet and carotid sites, adapted for consumer accessibility without complex derivations. The Nerve Health Score aids in monitoring neuropathy progression, while EDA helps identify chronic stress patterns that may contribute to autonomic imbalances. Recent advancements, such as the 2025 Omnia concept—a full-body smart mirror—aim to integrate over 20 biomarkers, including PWV, EDA, and segmental BIA, into a unified platform for comprehensive holistic health screening using AI-driven analysis.

Recent Advancements and Studies

In 2024, Withings contributed to several key studies leveraging its devices for early detection of health conditions. A notable investigation utilized the Body Pro 2 scale to identify diabetic peripheral neuropathy, showing near-perfect agreement with reference devices like Sudoscan in sensitivity and specificity. Complementary research explored correlations between wearable data from Withings devices and diabetic retinopathy, revealing patterns in activity and vital signs that predict retinal complications in at-risk populations. Additionally, studies on sudomotor function employed Withings scales to assess autonomic disorders, demonstrating reliable electrochemical skin conductance measurements for identifying sweat gland dysfunction linked to neurological issues. Advancements continued into 2025, highlighted at CES with research on the BPM Vision device for cuffless hypertension monitoring. A pilot study supported clinical accuracy in blood pressure estimation using sensors integrated into the device. Parallel trials for the Omnia conceptual platform evaluated multi-biomarker home labs, combining scans for body composition, cardiovascular metrics, and metabolic indicators to provide comprehensive at-home diagnostics. In June 2025, Withings launched Withings Intelligence, an AI-powered feature providing personalized health insights and trend detection from device data. Key studies from recent years underscore Withings' impact on chronic condition management. A 2023 analysis involving 5,000 participants, drawing from Analyzer platform data, linked poor sleep quality to a 25% increase in blood pressure among hypertensive individuals, emphasizing the role of integrated sleep tracking in cardiovascular risk assessment. In 2024, research on vascular aging in athletes utilized pulse wave velocity (PWV) measurements from Withings devices, showing significant PWV reductions following targeted training regimens, which supports interventions to mitigate age-related arterial stiffening. These developments signal a broader shift toward predictive analytics in Withings' ecosystem, where AI models analyze longitudinal trends to forecast health risks, such as estimating 6-month cardiovascular disease probability based on aggregated wearable and scale data. This approach enhances proactive care by integrating biomarkers like those briefly referenced in foundational metrics research. Looking ahead, ongoing clinical trials aim for FDA clearance on novel electrodermal activity (EDA) links to stress by late 2025, potentially expanding wearable applications for mental health monitoring in high-stress cohorts.

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