Episodes
How Smart Contact Lenses Are Reading Your Blood Sugar
In this episode, we explore the convergence of optometry and metabolic monitoring through smart contact lenses. Lucas and Luna examine how continuous glucose tracking is moving beyond wrist-worn devices into the eye itself. They discuss the engineering challenges of power delivery in a blink-sized device and the clinical implications for non-diabetic health optimization. The conversation anchors on recent pilot data showing correlation rates between tear fluid analysis and interstitial fluid…
How Sleep Apps Are Quietly Monetizing Your Rest
We dig into the hidden economics of sleep tracking. With the market for digital sleep interventions growing rapidly, companies are shifting from selling hardware to selling data-driven subscriptions and B2B partnerships. Lucas and Luna explore how apps like Oura and Whoop are building moats around behavioral data, while new players like Eight Sleep focus on hardware integration. We examine the regulatory gray zone between wellness tools and medical devices, and why insurers are finally paying…
How Digital Health Is Tackling Clinical Trial Diversity
Clinical trials have a diversity problem: Black and Hispanic patients are consistently underrepresented, and that skews drug safety and efficacy data. In this episode, Lucas and Luna look at how digital health tools are trying to fix it. They dig into the reasons behind the underrepresentation — from mistrust rooted in historical abuses to practical barriers like travel and time — and then explore concrete solutions: decentralized trials that let patients participate from home, wearable sensors…
How AI Is Making Clinical Trials More Human
Clinical trials are the bottleneck of modern medicine—slow, expensive, and often disconnected from real patients. In Episode 171 of The Digital Health Podcast, Lucas and Luna explore how artificial intelligence is quietly redesigning the trial process, from patient recruitment to real-time monitoring. They dig into the story of a mid-sized pharma company that cut its screening timeline from nine weeks to twelve days using an AI matching platform, and how decentralized trial software is keeping…
How AI Is Reading Your Medical Images
In this episode of The Digital Health Podcast, Lucas and Luna explore how artificial intelligence is transforming medical imaging, from radiology to pathology. They dive into the story of an AI tool that detects breast cancer in mammograms with accuracy matching expert radiologists, and discuss the broader implications for healthcare: faster diagnoses, reduced costs, and the changing role of doctors. Along the way, they unpack the data behind these algorithms, the regulatory hurdles they face…
How Smart Rings Became Clinical Grade
Smart rings have gone from sleep-tracking novelty to serious medical devices. In this episode, Lucas and Luna break down how the latest generation of smart rings is earning FDA clearance and showing up in clinical trials. They dig into the specific sensors, battery tech, and data standards that made the shift possible, and why cardiologists are starting to prescribe them for remote monitoring of conditions like atrial fibrillation. With October 2026 seeing the first large-scale study published…
How Smart Rings Are Becoming Clinical Grade
Smart rings are everywhere in 2026, from sleep tracking to cycle monitoring. But are they accurate enough for doctors to take seriously? In this episode, Lucas and Luna dig into the hardware constraints of a device that packs sensors into a tiny form factor, the regulatory shift that's pushing some rings toward FDA clearance, and why the clinical validation race is reshaping the entire wearable market. They break down the engineering trade-offs, the data gaps, and what a recent peer-reviewed…
How Continuous Glucose Monitors Are Reaching People Without Diabetes
Continuous glucose monitors were once the domain of people with diabetes. But by August 2026, a growing number of health-conscious consumers are wearing them to optimize energy, focus, and even athletic performance. In this episode, Lucas and Luna unpack the data behind this shift, from the falling cost of sensor technology to the rise of metabolic health programs at major employers. They explore a specific case: a mid-size tech company that offered CGMs to its entire workforce, and what the…
How Digital Therapeutics Are Getting Prescribed
In this episode, Lucas and Luna explore the quiet shift of digital therapeutics from wellness apps to FDA-cleared, prescription-only treatments. They focus on the rise of prescription digital therapeutics (PDTs) — software that treats conditions like chronic insomnia, ADHD, and substance use disorder — and how they're now covered by insurers and even Medicare. The hosts discuss the business model behind these products, the regulatory pathway, and the challenges of convincing doctors to…
How Pulse Oximeters Got Smarter in 2026
Pulse oximeters have been a staple of hospital care for decades, but consumer wearables are now pushing the technology to new limits. In this episode, Lucas and Luna explore how sensor fusion, machine learning, and new optical designs are making pulse oximetry more accurate in people with darker skin tones, a known weakness of traditional devices. They look at a landmark 2025 study that showed a 30 percent reduction in measurement bias, the role of multi-wavelength sensors, and what this means…
How Continuous Glucose Monitors Are Changing Sports Nutrition
Continuous glucose monitors, once the domain of diabetes care, are now being strapped to elite athletes and weekend warriors alike. In this episode, Lucas and Luna explore how real-time glucose data is reshaping sports nutrition, fueling debates about fueling strategies, and turning 'eat to train' into 'train to eat'. With a focus on the 2024 Tour de France and the rise of wearable CGM in endurance sports, they break down the science, the hype, and the practical takeaways for anyone curious…
How Digital Health Apps Are Navigating FDA Approval
In this episode of The Digital Health Podcast, Lucas and Luna dive into the evolving landscape of FDA regulation for digital health apps. With the FDA's 2026 guidance on software as a medical device, we explore how companies like Apple and AliveCor are navigating the fine line between wellness and medical claims. We break down the recent decision on over-the-counter continuous glucose monitors, the new Breakthrough Devices Program for digital therapeutics, and what the European MDR means for US…
How Continuous Glucose Monitors Are Transforming Diabetes Care
In this episode of The Digital Health Podcast, hosts Lucas and Luna explore the quiet revolution of continuous glucose monitors (CGMs) beyond diabetes. Once reserved for Type 1 patients, CGMs are now worn by athletes, biohackers, and the health-conscious, with companies like Dexcom and Abbott expanding into consumer markets. They discuss the science behind the sensors, the shift from finger pricks to real-time data, and the emerging debate over whether everyone needs to track their glucose.…
How Digital Health Is Shifting from Treatment to Prevention
In this episode, Lucas and Luna explore how digital health is finally moving from treating sickness to preventing it. They trace the shift from reactive care to proactive monitoring, spotlighting the rise of continuous glucose monitors, smartwatches that flag early warning signs, and the growing market for preventive health platforms. The conversation anchors on a striking figure: consumer health spending on prevention is projected to hit $250 billion by 2027, a number that signals a real…
How Wearables Are Tracking Your Heart Rate Variability
Heart rate variability is one of the most talked-about metrics in wearable health, but what does it really tell you? In this episode, Lucas and Luna explore the science behind HRV, why it's a powerful indicator of stress and recovery, and how a simple nightly reading could help you spot illness days before symptoms appear. They break down the key numbers—like the 50-millisecond difference that might matter—and explain why your smartwatch's HRV data is more reliable than you think, especially…
How Continuous Glucose Monitors Are Going Mainstream
Continuous glucose monitors were once a niche tool for people with type 1 diabetes, but now they're becoming everyday health wearables for fitness enthusiasts, biohackers, and even the general public. In this episode, Lucas and Luna explore how CGMs have evolved from medical devices to consumer wellness products, what they can actually tell you about your metabolism, and why companies like Abbott and Dexcom are betting big on this shift. They dig into the research on whether glucose tracking…
How Consumer Wearables Are Quietly Becoming Clinical Tools
In this episode, Lucas and Luna explore how consumer wearables like the Apple Watch and Oura Ring are quietly crossing from fitness tracking into clinical-grade monitoring. They dig into the FDA's new digital health framework, the rise of the over-the-counter ECG, and the story of a heart patient whose smartwatch caught a problem his annual physical missed. They also discuss the tricky economics of selling health features to consumers, and why one cardiologist now writes 'wearable data review'…
How Smartwatches Are Spotting Depression Before You Feel It
In this episode, Lucas and Luna explore a surprising new use for your smartwatch: detecting early signs of depression. They break down a 2025 study from the University of Pittsburgh that found wrist-worn sensors can predict depressive episodes by tracking sleep patterns, physical activity, and heart rate variability. Lucas explains how researchers used machine learning on data from over 3,000 participants to achieve 82 percent accuracy, and why the algorithm mostly relies on sleep quality and…
How Liquid Biopsies Are Changing Cancer Monitoring
Liquid biopsies are a blood test that can find cancer DNA and spot recurrence months before scans do. In this episode, Lucas and Luna look at the science, the business, and one specific case: a patient with early-stage colon cancer whose routine blood test caught a tiny return of the disease, leading to earlier treatment. They explain how Guardant Health and Natera are selling these tests, why insurance coverage is still patchy, and what the $2.3 billion market means for patients and investors.…
How Wearables Are Spotting Early Signs of Long COVID
In this episode, Lucas and Luna explore how consumer wearables are being used to track and predict long COVID symptoms. With data from millions of smartwatches, researchers are identifying patterns in heart rate, sleep, and activity that may signal the onset of long COVID months before a formal diagnosis. The hosts discuss a landmark study where wearable data predicted long COVID with 73% accuracy, the challenges of turning consumer devices into clinical tools, and what this means for the…
How Digital Twins Are Simulating Your Heart Before Surgery
In this episode, Lucas and Luna explore how cardiac surgeons are using digital twins—virtual replicas of a patient's heart—to simulate procedures before ever touching a scalpel. They look at the technology behind these models, the data needed to build them, and the real-world impact on patient outcomes. The conversation centers on a specific case: a 62-year-old patient with a complex arrhythmia whose surgery was rehearsed dozens of times in a digital environment, reducing the actual procedure…
How Smart Tattoos Are Changing Health Monitoring
In Episode 153 of The Digital Health Podcast, Lucas and Luna explore the emerging world of smart tattoos—ultra-thin, flexible sensors that stick to the skin and track everything from hydration to muscle activity. They dive into the science behind these 'epidermal electronics,' the companies leading the charge, and the regulatory hurdles ahead. With a specific focus on a recent clinical trial that used smart tattoos to monitor patients with heart disease, they discuss how this technology could…
How Health Data Interoperability Is Finally Working
Electronic health records have promised seamless data sharing for decades, but most patients still watch their records get faxed between providers. In this episode, Lucas and Luna dig into the quiet revolution happening in health data interoperability, focusing on the rise of FHIR, the standard that's finally making APIs the default in health care. They break down how companies like Epic and Cerner are opening up their platforms, why the federal mandate for patient access took effect in 2024…
Why Your Smartwatch Sleep Data Is Less Accurate Than You Think
Lucas and Luna dig into the growing consumer sleep-tracking market and the gap between marketing claims and clinical validation. They discuss recent research showing consumer wearables often overestimate sleep duration by 10-15 minutes per night compared to polysomnography, the gold-standard lab test. The episode covers how companies like Apple and Fitbit validate their algorithms, the rise of FDA-cleared sleep features, and what that means for the estimated $40 billion sleep tech industry.…
How Digital Health Platforms Are Winning Over Doctors
In episode 150 of The Digital Health Podcast, Lucas and Luna explore a surprising shift in digital health: after years of being burned by clunky apps and half-finished platforms, clinicians are finally adopting tools that actually fit their workflow. The hosts drill into the story of a regional medical group in Ohio that rolled out an AI-powered documentation assistant, cutting after-hours charting time by more than an hour a day. They unpack why this rollout worked when so many others failed…
The Rise of the Digital Twin in Health Care
Hospitals are building 'digital twins' — virtual replicas of organs, patients, and entire care pathways — to rehearse surgeries, stress-test treatment plans, and redesign hospital workflows before touching a real patient. This episode unpacks how the technology is moving from engineering and manufacturing into medicine, with a deep dive on the digital twin of a human heart that Philips and a major European hospital used to plan a complex congenital procedure in 2025. We get into what's real…
Why Your Fitness Tracker Data Is Not Your Crown Jewels
In this episode, Lucas and Luna dig into a growing tension in digital health: as wearables get better at tracking everything from heart rate to sleep, who actually owns that data? We look at the recent deal where a major health system bought a wearable startup and quietly changed its privacy policy, and what that means for the 40 million people who use these devices. We explore the difference between de-identified data and truly anonymous data, why your fitness tracker is not a medical device…
How Wearables Are Spotting Early Signs of Depression
In this episode, Lucas and Luna explore how consumer wearables like smartwatches and fitness trackers are being studied as early warning systems for depression. They focus on a landmark 2023 study from the University of Michigan that used Fitbit data to predict depression risk with surprising accuracy, and they discuss the signals researchers are chasing — from sleep irregularity to reduced physical activity — and what that means for mental health care. The conversation digs into the difference…
How AI Is Reinventing the Traditional Stethoscope
The stethoscope has been a doctor's signature tool for two centuries, but it's getting a digital upgrade. In this episode, Lucas and Luna explore how AI-powered stethoscopes are changing the way clinicians detect heart and lung conditions. From Eko's FDA-cleared algorithms that can spot heart murmurs and atrial fibrillation, to the potential for these devices to democratize diagnostics in remote areas, we break down the technology, the clinical evidence, and the business behind it. We discuss…
Why Your Smartwatch Blood Pressure Reading Is Not a Diagnosis
Smartwatches now claim to measure blood pressure, but what are they really tracking? In this episode, Lucas and Luna unpack the difference between a cuff-based reading and the PPG sensors in most wearables, using the Apple Watch's FDA-cleared sleep apnea feature and the Omron HeartGuide as contrasting examples. They explore why the regulatory path matters, how companies like Apple and Samsung are navigating the line between wellness and medical claims, and what this means for you if you're…
How Audiologists Are Using AI to Make Hearing Tests Smarter
In this episode of The Digital Health Podcast, Lucas and Luna dive into the world of digital hearing health, exploring how AI is transforming the traditional hearing test. They discuss the rise of smartphone-based audiometry, the challenges of remote testing, and the potential for AI to improve diagnostic accuracy. With millions of people suffering from untreated hearing loss, the hosts examine whether these new digital tools can bridge the gap between convenience and clinical reliability. They…
How Smart Rings Are Beating Smartwatches in Health Monitoring
Smartwatches get all the attention, but a tiny form factor is quietly winning the wearables race: the smart ring. In this episode, Lucas and Luna break down why rings like the Oura Ring are not just a fashion statement but a serious health-monitoring tool. They explore the sensor differences, the data accuracy, and the business model behind the trend—from subscription services to the soaring demand from consumers and employers alike. With the wearables market heating up in 2026, we look at the…
How AI Is Reading Your Smartwatch Data to Detect Atrial Fibrillation
In this episode, Lucas and Luna explore how smartwatches are using AI to detect atrial fibrillation, a condition that affects millions but often goes unnoticed. They discuss the rise of single-lead ECG on consumer devices, the use of photoplethysmography for pulse irregularity, and the results from large studies like the Apple Heart Study. The conversation covers the practical challenges of false positives, the impact on clinical workflows, and what this means for the future of cardiovascular…
Why Pear Therapeutics Failed and the Lessons for Digital Health
Pear Therapeutics was once the darling of digital health, raising over $400 million to develop FDA-authorized prescription apps for substance use and opioid use disorders. But in 2023, the company filed for bankruptcy. In this episode, Lucas and Luna dissect the reasons behind Pear's collapse: the challenge of securing insurance reimbursement, the high cost of physician sales teams, and the difficulty of convincing doctors to prescribe an app. They also explore what this means for other digital…
How Your Smartwatch Can Detect Early Signs of Parkinson's Disease
A new study from the University of Rochester shows that a standard smartwatch accelerometer can detect early signs of Parkinson's disease up to seven years before clinical diagnosis. We break down the study: how 10,000 participants' movement data was analyzed, the digital biomarkers that predict the disease, and the machine learning model that achieved 89% accuracy. We also discuss how this compares to traditional diagnosis, the potential for earlier intervention, and the privacy trade-offs.…
How Employers Use Fitness Tracker Data
A growing number of companies are linking health insurance premiums to employees' wearable data. Lucas and Luna break down the numbers: 22% of large employers now run such programs, some offering up to $1,500 in discounts or penalties of $40 per month. They explore the legal limits — GINA, ADA, and ACA caps on surcharges — and the privacy risks for workers. A real-world case study from a Midwest manufacturer sparks the conversation: Is your Fitbit really a voluntary perk or a new way of…
How Your Smartwatch Can Predict Chronic Pain Flares
Smartwatches are expanding beyond heart rate and sleep tracking into chronic pain prediction. In this episode, Lucas and Luna explore a 2026 study showing that wrist-based sensors can forecast pain flares with 85% accuracy up to 24 hours in advance. They cover the machine learning behind it, how pharmaceutical companies are using the data for drug development, and why insurers are eyeing wearables for pain management. The hosts also discuss the privacy pitfalls and regulatory hurdles keeping…
How Your Smartwatch Can Detect Early Signs of Sleep Apnea
A new study from the University of California San Francisco shows that consumer smartwatches can detect sleep apnea with 90% accuracy using overnight oxygen saturation and heart rate variability data. Lucas and Luna unpack how the algorithm works, why it matters for the 80% of undiagnosed cases, and what the FDA's recent clearance of a wearable-based sleep apnea diagnostic means for the $23 billion CPAP market. They also explore the privacy trade-offs of continuous sleep monitoring and how…
How Wearables Are Transforming Clinical Trials
Episode 136 dives into the quiet revolution happening at the intersection of wearables and pharmaceutical R&D. The FDA recently updated its guidance on using data from smartwatches and fitness trackers in clinical trials, opening the door for drug companies to recruit patients remotely, monitor them around the clock, and generate real-world evidence faster than traditional site visits. We look at how one mid-size biotech used off-the-shelf Fitbits to track heart rate and activity in a…
Why Non-Diabetics Are Wearing Glucose Monitors
Continuous glucose monitors (CGMs) have long been a tool for diabetics. But in 2026, companies like Dexcom and Abbott are marketing them directly to healthy consumers for metabolic optimization. Lucas and Luna explore the business model behind this shift: subscription revenue from a massive addressable market, the role of AI in interpreting real-time glucose data, and the concerns over medicalizing everyday eating. They examine startup players like Levels and Nutrisense, the threat from Apple's…
How Remote Patient Monitoring Became Profitable for Hospitals
Remote patient monitoring (RPM) has long been a promising idea—but could hospitals actually make money from it? In this episode, Lucas and Luna explore how the Centers for Medicare & Medicaid Services (CMS) expanded reimbursement codes in 2024 to cover more chronic conditions, turning RPM into a viable revenue stream. They examine a real-world example: a mid-sized hospital system in Ohio that cut readmission rates by 18% while generating $2.3 million in new RPM revenue in its first year. They…
Why Health Insurers Are Giving Away Free Smartwatches
Major health insurers like UnitedHealthcare are now offering free smartwatches to members who complete health assessments and share activity data. Hosts Lucas and Luna unpack the business logic behind this trend, from the Motley Fool-ish gamble on preventive savings to the hidden costs of data collection and adverse selection. They examine a JAMA study on step-count increases, the healthy-volunteer effect, and the privacy risks of insurers building risk profiles from wearable data. Is this a…
Why Prescription Apps Are Still a Hard Sell for Doctors
Over 50 digital therapeutics have FDA clearance, yet most have been prescribed to fewer than 10,000 patients. Lucas and Luna explore the business and adoption barriers facing prescription health apps, from insurance reimbursement to physician awareness. They examine the case of EndeavorRx, the first FDA-cleared video game treatment for ADHD, and reSET-O for opioid use disorder. Why does clinically proven software still struggle to reach patients? This episode offers a grounded look at the gap…
How Your Smartphone Can Give You a Medical-Grade Hearing Test
Lucas and Luna explore how smartphone-based hearing tests are challenging traditional audiometry. They discuss a 2024 study from the University of Washington showing that a combination of a phone's microphone and speaker can detect hearing loss with over 90% accuracy compared to clinical tests. The episode covers the science behind calibrated sound delivery, the role of AI in compensating for phone-to-phone variability, and what this means for the 1.5 billion people worldwide with undiagnosed…
How Your Smartwatch Can Detect Early Signs of Liver Disease
In this episode of The Digital Health Podcast, Lucas and Luna explore how your smartwatch might soon help detect early-stage liver disease before symptoms appear. They focus on a 2025 study from the University of Cambridge that used smartwatch data — heart rate variability, sleep patterns, and step counts — to predict non-alcoholic fatty liver disease (NAFLD) with 82 percent accuracy. The hosts discuss the study's methodology, the limitations of current liver diagnostics, and what this means…
How Your Smartwatch Can Detect Skin Cancer with AI
In this episode, Lucas and Luna explore how artificial intelligence is turning your everyday smartwatch into a tool for early skin cancer detection. They dive into a study from the University of California, Irvine, where researchers trained a deep learning model on over 130,000 dermoscopic images to identify melanoma with 95% accuracy — comparable to board-certified dermatologists. The conversation covers how smartwatch cameras and sensors can capture images of moles and lesions, the challenges…
How AI Is Reading Your Smartwatch Data to Predict Migraines
Lucas and Luna explore the emerging use of AI and smartwatch data to predict migraine attacks hours before symptoms begin. They examine a 2025 study from the University of Helsinki involving 200 participants who wore smartwatches tracking heart rate, skin temperature, and activity. The AI model predicted migraines with 85% accuracy up to two hours in advance. The hosts discuss the role of autonomic nervous system changes, the limitations of current wearables for pain detection, and whether this…
How Your Smartwatch Can Detect Early Signs of Asthma
Episode 127 of The Digital Health Podcast dives into the growing role of smartwatches in asthma management. Lucas and Luna explore how wearables like the Apple Watch and Fitbit are using heart rate variability, respiratory rate, and SpO2 sensors to predict asthma attacks hours before symptoms appear. They discuss a 2025 study from Mount Sinai involving 5,000 patients, where an AI model trained on smartwatch data flagged 80% of attacks with a 30-minute warning window. The hosts also examine the…
How Your Smartwatch Can Detect Early Signs of Diabetes
Episode 126 of The Digital Health Podcast with Fexingo explores how consumer wearables—like the Apple Watch and Fitbit—are being used to screen for prediabetes and type 2 diabetes before symptoms appear. Lucas and Luna dive into a 2024 study from the Journal of the American Medical Association (JAMA) that analyzed smartwatch data from over 10,000 participants. They discuss how heart rate variability, step counts, and sleep patterns are being fed into machine learning models to flag insulin…
How AI Is Reading Your Smartwatch Data for Chronic Fatigue
Lucas and Luna explore how researchers at King's College London are using smartwatch data — heart rate variability, sleep patterns, and activity levels — to detect chronic fatigue syndrome. A study of 1,200 participants found that machine learning models could identify the condition with 82 percent accuracy using two weeks of wearable data. They discuss the challenges of diagnosing ME/CFS, the potential for earlier intervention, and whether this could lead to a consumer-facing feature. No ads…
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