Function Health
| Company type | Private |
|---|---|
| Industry | Health technology |
| Founded | 2021 |
| Founder | Mark Hyman, Pranitha Patil, Mike Nemke, Seth Weisfeld, Jonathan Swerdlin, Daniel Swerdlin |
| Headquarters | Austin, Texas , United States |
| Products | Subscription health platform with clinical laboratory testing, diagnostic imaging (MRI and CT), supplements and nutrition guidance |
Function Health, commonly referred to simply as Function, is a U.S.-based health technology firm situated in Austin, Texas. Established in 2021 by Mark Hyman, Pranitha Patil, Mike Nemke, Seth Weisfeld, Jonathan Swerdlin, and Daniel Swerdlin, the enterprise delivers a subscription health platform that includes direct-to-consumer clinical laboratory testing, diagnostic services such as comprehensive MRI and CT scan imaging, along with expert guidance on supplements and nutrition. According to sources like Allure (magazine) and The Daily Beast, Function Health offers laboratory testing at a frequency five times greater than that of standard annual physical examinations.
History
Function Health was launched in 2021 by Mark Hyman and his co-founders. In 2023 alone, the company conducted over three million laboratory tests. By the year 2024, it had amassed a membership exceeding 100,000 individuals and maintained a waiting list of around 200,000 prospective clients. Founder Mark Hyman revealed that data collected from the first 10,000 users amounted to over one million data points.
In May 2025, Function Health expanded its capabilities by acquiring Ezra, incorporating its MRI scanning technology into the existing platform. That same year, the company gained recognition by being included in the gift bags for the Academy Awards nominees and initiated its inaugural branding campaign titled "Long Live Moms," which was aligned with Mother's Day celebrations.
By June 2025, Function Health earned a spot on Time magazine's list of the most influential companies for that year.
Technology
Function Health’s diagnostic system offers extensive laboratory testing options that assess organ function, hormone levels, nutrient status, metabolism, and cancer indicators. Clients arrange their lab appointments through affiliated providers such as Quest Diagnostics, receiving results accompanied by clinical interpretations from the company’s medical team. These reports are structured to facilitate sharing with other healthcare professionals to enhance integrated patient care.
The platform's approach utilizes biological data points alongside phenotypic age—a biomarker-based analysis including measures like albumin, creatinine, glucose levels, and mean corpuscular volume—grounded in the principles of precision medicine.
Fundraising
Since its establishment, the company has completed three seed funding rounds, initially raising $3 million in March 2022, followed by additional undisclosed rounds in December 2023 and April 2024.
In June 2024, the organization secured $53 million through a Series A financing round, led by Andreessen Horowitz, Wisdom.vc, Draft Ventures, K5, and G9 Ventures, which valued the company at $191 million.
The investor group includes entities such as 53 Stations and Embiid Ventures, as well as notable business executives and medical professionals like Ari Emanuel, Casey Means, Harvey Spevak, Harpeet Singh Rai, and Jeff Dean. Celebrity backers feature Matt Damon, Kevin Hart, Zac Efron, Pedro Pascal, Jay Shetty, along with athletes Blake Griffin, Colin Kaepernick, and Jimmy Rollins.
Partnerships
In May 2024, the company established a partnership with health club Equinox Group to deliver a tailored program encompassing nutrition, sleep optimization, and fitness coaching, which incorporates lab testing provided by Function Health. This initiative enables members to track both their physical and mental performance relative to their fitness objectives.
By October 2024, the company collaborated with Thrive Global, founded by Arianna Huffington, to implement a health coaching service aimed at employee well-being.
In December 2024, a partnership was formed with biotechnology firm Grail to provide members access to a multi-cancer early detection (MCED) test. This includes the Galleri blood-based liquid biopsy capable of screening for 50 different cancer types by analyzing DNA signatures prior to symptom onset.
In February 2025, the company allied with the National Basketball Players Association, offering NBPA members advanced lab testing that surpasses conventional team medical evaluations.
In April 2025, collaboration with Thatch, an employer health benefits platform, was initiated to supply employees with preventive diagnostic testing services.