Lucis

Summary active Updated May 27, 2026

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Location Paris, France
Founded 2025
Latest Stage Series A
Total Raised €24M

Investors

y-combinator seed (2025)
y-combinator series-a (2026)
Y Combinator seed (2025)
Y Combinator series-a (2026)

Founders

Maxime Berthelot Co-Founder
Baptiste Debever Co-Founder

About

Lucis is a Paris-based preventive health platform that combines blood biomarker analysis with AI to deliver personalised, science-based health recommendations 12. The platform analyses more than 110 blood biomarkers across metabolic health, hormones, cardiovascular risk, inflammation, and nutrient levels 1.

Founded in 2025 by Maxime Berthelot and Baptiste Debever, Lucis reached 10,000 users in under a year 12. Among users who completed a six-month follow-up, the company reports that 75% improved at least three biomarkers without medication 1.

Funding History

Date Round Amount Lead Co-investors
2025-12 Seed €7.2M Y Combinator and others 2
2026-05-26 Series A €17.1M Singular General Catalyst, Y Combinator, angels including Céline Lazorthes (Resilience), Manu Lecomte, and Runna investors 12

The Series A brings total funding to approximately €24M 2. The company plans to expand into Spain, Germany, and Italy by the end of 2026 1.

What Investors Say

No independently sourced investor quotes found at this time.

What Founders Say

No independently sourced founder testimonials found at this time.

Sources


  1. “YC-backed French preventive health platform Lucis raises €17.3 million Series A led by Singular,” EU-Startups, May 26, 2026. https://www.eu-startups.com/2026/05/yc-backed-french-preventive-health-platform-lucis-raises-e17-3-million-series-a-led-by-singular/

  2. “Lucis raises $20M Series A to expand AI-driven preventive healthcare platform,” Tech.eu, May 26, 2026. https://tech.eu/2026/05/26/lucis-raises-20m-series-a-to-expand-ai-driven-preventive-healthcare-platform/