Preventive health platform Lucis has raised $20 million Series A, led by Singular, with participation from General Catalyst, Y Combinator, and angels including investors behind Runna, Céline Lazorthes (Resilience), and Manu Lecomte.
The round follows Lucis’s $8 million seed raised four months ago, bringing total funding to $28 million.
Founded in 2025 by Maxime Berthelot and Baptiste Debever, Lucis provides individuals with a comprehensive, data-driven view of their health.
The platform analyses more than 110 blood biomarkers across key systems, including metabolic health, hormones, cardiovascular risk, inflammation, and nutrient levels. These results feed into an AI-powered health companion app, alongside longitudinal data and medical context, to deliver personalised guidance spanning nutrition, supplementation, lifestyle changes and follow-up testing
. Recommendations are continuously refined as new data becomes available and are reviewed by physicians, helping users understand what actions to take, not just what the data shows.
According to Maxime Berthelot, Co-founder and CEO, Lucis:
“We’ve seen the devastating impact of late-stage diagnosis first-hand. The science is already there; what’s missing is a system designed to act before symptoms appear. This is why we built Lucis.
By combining biomarker data and AI-driven clinical insights, we can catch what the system misses. Europe deserves a healthcare model that doesn’t wait for people to get sick. We are making prevention the default, rather than a privilege.”
Early data from Lucis’s growing user base of over 10,000 shows both meaningful health outcomes and sustained engagement. Among users who completed a six-month follow-up, 75 per cent improved at least three biomarkers without medication.
More than 80 per cent opted to retest, suggesting continued engagement with the platform and their health data.
At initial testing, 99.9 per cent of users had at least one biomarker outside optimal ranges, often without prior awareness, highlighting how easily potential health risks can go unnoticed without regular monitoring.
Today, Lucis is powered by a team of 20 across engineering, clinical, growth, and operations, supported by a medical board and a growing network of 10+ physicians providing clinical oversight.
Jeremy Uzan, Co-Founder & GP at Singular, said:
“Europe’s preventive health category will be won by platforms that unite clinical credibility with AI at scale. Lucis has moved with remarkable velocity, reaching 10,000 users in under a year, delivering measurable outcomes and building a compounding data advantage that sets the standard for the category.
We see Lucis as a clear category winner in Europe and are excited to partner with the team as the product continues to evolve alongside customer needs.”
Since launching in 2025, Lucis has grown to more than 10,000 users across France, the UK, Ireland, and Portugal, and has delivered over one million biomarker tests.
The company has also built a community of thousands members and established partnerships with laboratory groups including Eurofins and Randox. Lucis plans to expand into Spain, Germany, and Italy by the end of 2026, while continuing to invest in personalisation, longitudinal monitoring, and clinical safety.