yann lecun

What Is Function Health?
Function Health is a membership-based health platform designed to empower individuals to take control of their health through comprehensive, data-driven insights. For $499 per year (or roughly $42 per month), members gain access to over 100 lab tests—five times more than a typical annual physical—covering everything from heart health, thyroid function, hormones, and cancer biomarkers to fertility and biological age indicators. These tests, paired with actionable insights from top doctors, aim to help users “live 100 healthy years” by detecting issues early and optimizing wellness proactively.

Unlike traditional healthcare, which often reacts to illness, Function Health flips the script with a preventive, personalized approach. The company partners with innovative players like GRAIL (for cancer detection) and integrates with employers and fitness chains to broaden its reach. It’s a consumer-first model: no insurance hassles, direct access to deep health data, and a sleek, tech-driven experience.

How Did Function Health Scale So Quickly?
Function Health’s journey from a 2023 beta launch to surpassing $100 million in revenue is a masterclass in rapid scaling. (Note: Function Health partners with labs, and this revenue represents gross revenue, inclusive of revenue that goes to labs.) While exact revenue figures aren’t public, reports indicate it crossed this milestone by early 2025, a remarkable feat in under two years. Here’s how co-founder and CEO Jonathan Swerdlin, alongside Chief Medical Officer Dr. Mark Hyman and COO Pranitha Patil, made it happen:

• Celebrity and Influencer Backing: Function secured $53 million in its Series A round in June 2024, led by Andreessen Horowitz Bio + Health, with a star-studded investor list including Matt Damon, Kevin Hart, Zac Efron, Pedro Pascal, and athletes like Joel Embiid and Colin Kaepernick. This wasn’t just capital—it was a marketing coup. High-profile endorsements amplified brand visibility, tapping into their vast audiences and lending credibility to a nascent health tech player.
• Consumer-Centric Pricing and Accessibility: At $499 annually, Function Health undercuts the cost of piecemeal lab testing while offering unmatched depth. By bypassing insurance and partnering with nationwide labs, it made sign-up frictionless—order online, visit a lab, get results. This direct-to-consumer model resonated with a growing demographic willing to pay out-of-pocket for proactive health tools.
• Strategic Partnerships: Function didn’t build in isolation. Collaborations with GRAIL for cancer screening, Thrive Global for workplace wellness, and fitness chains like Fitness SF and Equinox for biomarker integration expanded its ecosystem. These partnerships broadened its customer base beyond individual subscribers to employers and fitness enthusiasts.
  Tech and Data Innovation: Leveraging a sophisticated tech stack (React Native, Cloudflare, Twitter Ads), Function delivers a seamless user experience and scales efficiently. Its platform turns complex lab data into digestible, actionable insights—a key differentiator in a crowded health tech market.
• Cultural Momentum: Function tapped into the longevity and preventive medicine zeitgeist. With 73% of Americans dissatisfied with traditional healthcare (per Function’s 2024 claims) and chronic illness projected to affect 170 million by 2030, Swerdlin and team positioned Function as a timely solution to a broken system.
  Adoption Rate and User Base
• By December 2024, Function Health boasted over 100,000 members—a staggering adoption rate for a company less than two years old. Assuming a $499 annual fee per member, this alone suggests revenue of at least $50 million from memberships, with additional growth likely from enterprise deals and upselling premium services. The company’s expansion into New York and New Jersey in November 2024 further widened its reach, targeting millions more in dense urban markets.

This adoption pace reflects both pent-up demand for personalized health tools and Function’s ability to convert awareness into action. Its “fastest-growing health platform in the US” claim (PR Newswire, June 2024) isn’t just hype—over 100,000 users in under 18 months suggests a compound growth rate that outstrips many peers in the digital health space.

Valuing Function Health: Is $2B+ Fair?
Function Health’s latest funding round, reported in February 2025, aims to vault its valuation to $2 billion—a 37x jump from its $53 million Series A post-money valuation just eight months prior. To assess fairness, let’s break it down:

Revenue Multiples: Health tech startups often trade at 10-20x revenue multiples in high-growth phases. If Function’s revenue is $100 million, a $2 billion valuation implies a 20x multiple—aggressive but plausible for a category leader with strong growth. If revenue exceeds $150 million (possible with enterprise deals), the multiple drops to 13.3x, aligning with benchmarks like Livongo (sold for $18.5 billion at ~15x revenue in 2020).
Growth Trajectory: Function’s 100,000+ users and geographic expansion signal scalability. Annual recurring revenue (ARR) likely grows with retention (typical for subscription models is 80-90%) and new sign-ups. A path to $200-300 million ARR in 2-3 years could justify $2 billion today, assuming 10x forward ARR—a common VC metric.
Market Opportunity: The global preventive healthcare market is projected to hit $500 billion by 2030. Function’s unique positioning—100+ tests, doctor insights, consumer-first—could capture 1-2% ($5-10 billion), making $2 billion a stepping stone, not a ceiling.
Verdict: At $100 million revenue, $2 billion feels optimistic but not absurd—20x is steep yet within health tech norms for disruptors. If revenue is closer to $150-200 million, it’s downright reasonable. The celebrity halo, partnerships, and adoption momentum bolster the case, though execution risks temper enthusiasm.