The Center for Data Innovation recently spoke with Kelri Luks, CEO of Muun Health, an Estonia-based company developing a wearable hormone-monitoring platform. Luks explained how the company’s sensor is designed to continuously measure hormone changes and help women and clinicians better understand hormonal health over time.
David Kertai: What problem is Muun Health solving?
Kerli Luks: Women’s hormonal health is primarily measured through occasional blood, urine, or saliva tests, even though hormone levels fluctuate constantly throughout the day and across the menstrual cycle. A single test often misses important changes related to ovulation, stress, sleep, medication, fertility treatment, perimenopause, or endocrine disorders. As a result, many women experience symptoms without clear explanations, and clinicians must make decisions using limited snapshots rather than continuous trends.
To address this, we are developing a minimally invasive wearable device that continuously measures hormone levels instead of relying solely on occasional laboratory tests. The wearable combines biosensing hardware with a software platform that translates those measurements into meaningful insights for users and clinicians. Our goal is to make hormone information more accessible, personalized, and clinically useful.
Kertai: What health indicators is Muun Health’s wearable device being designed to monitor?
Luks: Our device is designed to continuously monitor key hormones involved in fertility and reproductive health, including estradiol, progesterone, and luteinizing hormone. These hormones influence ovulation, menstrual-cycle regularity, fertility treatment, and many symptoms associated with hormonal imbalance.
To capture these signals, we are developing a wearable that uses tiny microneedles to collect interstitial fluid, the liquid that surrounds the body’s cells, from just beneath the skin. The sensor uses specialized biochemical-recognition molecules that bind only to specific hormones, allowing us to continuously measure them. The software then converts those measurements into clear hormone trends that users and clinicians can easily interpret. We are validating the sensor through laboratory testing, device prototyping, and clinical studies that compare its measurements with traditional blood tests.
Kertai: What insights and recommendations does the platform provide to users?
Luks: The platform is designed to help users interpret how their hormone levels change over time rather than focusing on individual measurements. It can identify menstrual-cycle phases, fertility windows, ovulation-related changes, long-term hormone trends, and unusual patterns that may deserve attention. The platform also relates those hormone changes to symptoms, mood, energy levels, sleep, exercise, and stress, providing important context for understanding overall hormonal health.
Based on those trends, the platform may recommend tracking specific symptoms, discussing unusual patterns with a clinician, or adjusting lifestyle factors such as sleep or exercise when they appear to influence hormonal health. For women undergoing fertility treatment or hormone therapy, it can also help track whether treatment is progressing as expected and provide clearer information for conversations with healthcare providers.
Kertai: What challenges have you faced while developing health-monitoring technology?
Luks: One of our biggest challenges is the highly individual nature of hormone biology. Hormone patterns vary from person to person and are influenced by many biological and lifestyle factors. Determining what is normal requires large amounts of high-quality, long-term data. Women’s health has also historically been under-researched, making it essential to build our platform on carefully collected and clinically validated datasets.
We also face product and regulatory challenges. Hormone information can be highly personal, especially for people navigating fertility treatment or reproductive-health concerns, so the platform must provide clear, useful insights without creating unnecessary anxiety. Because we are developing a medical device rather than a wellness app, every feature must meet rigorous clinical, safety, and regulatory standards. Balancing scientific innovation with clinical reliability remains central to everything we build.
Kertai: What is your long-term vision for Muun Health?
Luks: Our long-term vision is to make continuous hormone monitoring as accessible and routine as continuous glucose monitoring has become for diabetes. Instead of relying on occasional laboratory tests, we want women and clinicians to understand hormone changes as they happen, providing a much clearer picture of reproductive and hormonal health over time.
As we continue developing the platform, we plan to expand the hormones we monitor, support additional conditions such as perimenopause and endocrine disorders, and incorporate AI tools to identify meaningful long-term patterns and deliver more personalized insights. Ultimately, we want continuous hormone monitoring to give women and clinicians the information they need to make earlier, more informed decisions and move toward a more proactive, personalized approach to hormonal healthcare.
