Lucis wants to help make prevention a habit, for less than €17 a month

Press release, October 27, 2026

Lucis is launching its health subscription dedicated to prevention, built around Lumi, the AI health coach, available for €199 a year, or less than €17 a month. Lucis is the preventative health membership that brings advanced biomarker testing and personal guidance together in one app, helping you understand your body and act on what matters every day. The launch comes as the French Parliament examines the Social Security budget, in which prevention is among the top priorities. Lucis, which already has more than 20,000 members, aims to contribute by making prevention a habit, simple and accessible to as many people as possible.

<iframe width="560" height="315" src="https://www.youtube.com/embed/owu-m36STrY?si=VxvBovBxJV133LaO" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>

Making prevention accessible, a simple everyday habit

Lucis is a health subscription. It brings together, in a single app, an in-depth blood test and a year of support, to help each member know where their health stands and act on what matters. In practice, the member visits one of Lucis's 450 partner laboratories once for a blood and urine test. The results then arrive in the app, explained in plain language and sorted between what matters and what can wait. They can help shed light on questions everyone asks themselves: why am I tired? how is my heart doing? am I missing something?

Lumi, Lucis's AI health coach, answers the member's questions all year round, based on their own results and on data from their connected devices: sleep, activity, heart rate variability. An action plan turns these results into concrete next steps in nutrition, sleep, physical activity or mental health, and flags what to raise with a doctor. Each new result is compared with previous ones, to track how each of the body's systems evolves over time. A few months later, a follow-up panel measures whether the changes have paid off.

Access to Lucis costs €199 a year, or less than €17 a month: the price of a Netflix subscription or a mobile phone plan, two expenses firmly rooted in everyday life in France. Lucis is available today in France at www.lucis.life.

"Everyone agrees on prevention. To make it a habit, price is only one factor. It is first and foremost a cultural question: prevention needs to become a simple, easy everyday habit, accessible to everyone. That is exactly what we want to do with Lucis, alongside the healthcare system and doctors. By acting upstream and making prevention a habit, we will collectively bring healthcare costs down," says Maxime Berthelot, co-founder and CEO of Lucis.

More than 80 biomarkers, chosen by the Lucis medical team

The panel, done in a single visit to a partner laboratory, covers the body's major systems: heart and lipids, blood sugar, inflammation, liver, kidneys, iron, vitamins, thyroid, hormones. Its markers were selected with prevention in mind, not diagnosis or responding to a symptom: each one is there because your lifestyle can affect it.

Most tests stop at the results. Lucis starts there: lab results, questionnaire and connected devices are brought together in the app, and prevention becomes something followed over time rather than a one-off. Lucis works alongside each member's own doctor and does not make diagnoses: the results flag what deserves attention and what to raise with their doctor. Every AI-generated action plan is reviewed and approved by a doctor on the Lucis team before it is made available to the member. Those who wish can consult a doctor by teleconsultation at any time, thanks to a partnership with Kry (formerly LivI): 15 to 20% of members already use it. A medical committee and a network of more than ten doctors provide clinical oversight.

Demand is already there, and the results are measurable

Cardiovascular disease and diabetes are among the largest items of spending for French national health insurance (Assurance maladie), and a large share of these diseases can be prevented. Lucis data show demand that is already established and measurable effects:

• prevention (76%), getting energy back (74%) and sleeping better (60%) are the three priorities of people in France who join Lucis¹;

• two out of three members are between 26 and 44, an age at which no "Mon bilan prévention" check-up appointment is offered;

• more than 80% have chosen to take another test.

About Lucis

Protecting personal data is at the heart of Lucis's commitments. GDPR compliant and ISO 27001 certified for information security, Lucis guarantees that health data is hosted in France, with an HDS-certified provider (Hébergement de Données de Santé, the French health data hosting certification). Members' data is never sold and can be deleted at any time.

The company has raised $28 million from Singular, General Catalyst and Y Combinator.

¹ Sample of 8,244 adult Lucis members, motivations stated at sign-up, January 2025 to October 2026. These figures describe Lucis members, not the French population.

This article has been translated from French using AI.