Function was founded with a singular focus: empower you to live 100 healthy years.

We know a fulfilling life depends on health, and health depends on awareness. You are the source of your truth and we are here to enrich you with the deepest awareness of what is happening within you. We start by bringing together routine whole body lab testing and the world’s top doctors. It is our first step in helping you pursue a lifetime of avoiding disease and feeling your best.

Across the Function team, we have each had health challenges shape our lives. We’ve experienced healthcare’s shortcomings juxtaposed with the brilliance of medicine. It inspires us to remove complexity, place exponential health technologies in your hands, and put privacy first. Our unwavering commitment is to empower you to own your ever-changing health. Function is all about you.

Welcome to your health.

Founding Team

Pranitha Patil
Co-Founder

“We created Function to jumpstart a more empowered, healthier life for you and your family and friends. It's done that for me.”

Left Harvard graduate school early to build Function. Formerly Accenture Health Strategy.

Vegan on a lifelong journey to manage PCOS and high cholesterol. Proudly brought down pre-diabetic blood sugar to normal range.

Mike Nemke
Co-Founder

“Life’s too short and we’re changing that.”

Tackler of big challenges. Prototyped and built AI systems for the VA to get veterans services faster. Former Green Beret Medic and avid biohacker. MS in AI from Northwestern.

Working on decreasing rheumatoid factor. Finding success by eliminating foods based on recent tests.

Jonathan Swerdlin
Co-Founder

“My family and I are Function members. We are building this with our loved ones in mind. We want them to be their healthiest and stick around. Everyone deserves that.”

Serial healthcare entrepreneur and investor.

Managing a lifelong neurological condition by balancing nutrient biomarkers instead of relying on medication. Reducing unusually high mercury levels. Bringing lipid particle sizes into an optimal range.

Mark Hyman, M.D.
Co-Founder and Chief Medical Officer

“I wish I could see millions of patients. We are building Function to democratize so much of what I do and give you the keys to own your health. It is the most powerful approach to health I’ve seen in my career as a doctor.”


‍Former Cleveland Clinic physician. 15x NY Times best-selling author.

Spent years battling heavy metal toxicity and broad dysfunction. Learned to heal himself, inspiring a career pioneering new frontiers of medicine.

Seth Weisfeld
Co-Founder

“The user experience of healthcare and people’s ability to take an active role to course correct their health problems severely lags behind other industries. Function is bringing meaningful change to empower everyone to live their best life.”

Product design lead specializing in zero-to-one efforts. Over 20 years of experience leading UX and strategy for Fortune 500 companies.

Lifelong management of autoimmune driven inflammation and colitis. Optimizing nutritional profile and diet through testing.

Dan Swerdlin
Co-Founder

“Knowledge is power. Health is wealth. It’s an honor to help people make the most of their lives.”

Founder of law firm dedicated to helping individuals and companies navigate challenging legal issues. JD from Stanford Law School.

Reducing inflammation with stress management. Actively bringing down LDL small and ApoB.

AS SEEN in
WSJ
NY Times
fortune
Axios
Forbes
VOGUE
PEOPLE
CNBC
Partnerships
EQUINOX
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Thrive Global
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EREWOHN
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One Mind
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EUDEMONIA
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Backed by
Andreesen Horowitz
Andreesen Horowitz
Wisdom VC
Wisdom VC
Able
Able
Ari Emanuel
Ari Emanuel
Blake Griffin
Blake Griffin
Cade
Cade
Colin O’Brady
Colin O’Brady
Continuum
Continuum
Daybreaker
Daybreaker
Casey Means MD
Casey Means MD
Draft Ventures
Draft Ventures
Fearless Ventures
Fearless Ventures
fifty three stations
fifty three stations
G9
G9
Harvey Spevak
Harvey Spevak
Jay Shetty
Jay Shetty
Jeff Dean
Jeff Dean
Joel Embiid
Joel Embiid
K5
K5
Kevin Hart
Kevin Hart
Marie Forleo
Marie Forleo
Matt Damon
Matt Damon
Pari Passu
Pari Passu
Pedro Pascal
Pedro Pascal
Spacecadet
Spacecadet
Wisdom Ventures
Wisdom Ventures
Zac Efron
Zac Efron
Awards
Award 1
Award 1
Award 2
Award 2
Award 3
Award 3

Trust & Reliability

Gold-standard labs. No compromises.

Function partners exclusively with medically renowned labs—including Quest Diagnostics and cancer testing pioneer Grail—that meet our rigorous standards for results integrity. Data accuracy is non-negotiable, and our partners are safeguarded by leading data security and privacy measures.

Quest diagnostics
Grail

Our Team

Function is more than a company; it’s a mission led by a world-class team engineering the future of how we live. Inspired by personal stories of how health has shaped our lives and the lives of our families, we are tirelessly committed to empowering others to live 100 healthy years.

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It's time you own your health.

Function includes 100+ lab tests to help you get a complete, ongoing picture of your health.