🙂 Team

New Advisors


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David A. Sinclair, Ph.D., A.O. is the preeminent global thought leader on longevity and aging. The author of Lifespan: Why We Age— And Why We Don't Have To, Dr. Sinclair has shaped the global conversation on the root causes of aging, and how to maximize our healthy lifespan. He has been vocal about the importance of metabolic health for longevity and his own personal use of CGMs.

Dr. Sinclair is a Professor in the Department of Genetics and co-Director of the Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School. He is best known for his work on understanding why we age and how to slow its effects. He obtained his Ph.D. in Molecular Genetics at the University of New South Wales, Sydney in 1995. He worked as a postdoctoral researcher at M.I.T. with Dr. Leonard Guarente where he co discovered a cause of aging for yeast as well as the role of Sir2 in epigenetic changes driven by genome instability.

Dr. Sinclair is co-founder of several biotechnology companies (Sirtris, Ovascience, Genocea, Cohbar, MetroBiotech, ArcBio, Liberty Biosecurity) and is on the boards of several others. He is also co-founder and co-chief editor of the journal Aging. His work is featured in five books, two documentary movies, 60 Minutes, Morgan Freeman’s “Through the Wormhole” and other media. He is an inventor on 35 patents and has received more than 25 awards and honors including the CSL Prize, The Australian Commonwealth Prize, Thompson Prize, Helen Hay Whitney Postdoctoral Award, Charles Hood Fellowship, Leukemia Society Fellowship, Ludwig Scholarship, Harvard-Armenise Fellowship, American Association for Aging Research Fellowship, Nathan Shock Award from the National Institutes of Health, Ellison Medical Foundation Junior and Senior Scholar Awards, Merck Prize, Genzyme Outstanding Achievement in Biomedical Science Award, Bio-Innovator Award, David Murdock-Dole Lectureship, Fisher Honorary Lectureship, Les Lazarus Lectureship, Australian Medical Research Medal, The Frontiers in Aging and Regeneration Award, Top 100 Australian Innovators, and TIME magazine’s list of the “100 most influential people in the world”.

New Hires

We added 3 members to the team during October, bringing our fulltime headcount to 33.

Tony Milio (LinkedIn) joined us as Multimedia Producer, and he's been contracting with us since Fall 2020 producing internal and external video content. We're excited to welcome him to the team to add in-house support for the audio and video production that are core parts of our content, community, and growth strategies.

Lauren Kelly-Chew (LinkedIn) joined us as Head of Clinical Product. Lauren is a physician, past YC-founder, and most recently led strategy at Verily. She'll be focusing her efforts on expanding our business and product in the clinical setting. She's extremely knowledgeable and experienced in this space, and we couldn't be more excited to welcome her to the team.

Jackie Tsontakis (LinkedIn) joined us as a Growth Generalist. She was most recently at Pepsi in a marketing rotation and brings diverse experience to this role which will include managing influencer and content creator partnerships and increasing our capacity to take on new growth and marketing initiatives.

Tony Milio, Multimedia Producer


After graduating with my Bachelors in Film Production in 2011, my passion for creating branded content has driven me to produce, shoot and edit countless videos all over the world with some of the greatest athletes, brands and corporate clients.

Previous to Levels, I was a Camera Operator and Editor for several production companies where I shot and edited videos on a freelance basis. During this time, I collaborated on projects with Halo Neuroscience, Mohegan Sun, MTV, IBM, PIMCO, Lord & Taylor and many others. I was also a full-time Video Producer for nine years at a mid-size global bicycle brand called Jamis Bikes where I created hundreds of their videos, established and managed their social channels and shot a majority of their lifestyle photography.

My first freelance shoot with Levels was in October 2020 and this is what made me aware of their product. I always understood the importance of sleep, staying fit and eating healthy but without tracking the results of how your body metabolizes your food in real-time, I felt it was impossible to know if I was making the right choices. Since everyone reacts differently to different foods, Levels helps you know what’s truly metabolically healthy for your body. I’m ecstatic to be a part of this mission as their new Multimedia Producer. I’m also looking forward to helping Levels grow their video content and manage their podcasts to spread more awareness on how we can change everyone’s lives.

Lauren Kelly-Chew MD, Head of Clinical Product


I’ve always been drawn to the intersections of medicine, tech, and business. During my undergrad at Stanford, I studied human biology and applied math, completing a Howard Hughes research fellowship. I also spent a summer at Goldman Sachs; moving between the worlds of science and business energized me.

After graduating, I worked in private equity, investing in health tech companies. I loved the rigorous, analytic thinking required to understand companies through an investor lens, which still forms the backbone of my approach to most problem-solving.

In search of deep clinical expertise, I next went to medical school at UPenn, where I served as a Gamble Scholar and got an insider’s view into how patient care really works (or doesn’t). Based on this experience, I founded a Y-Combinator backed digital therapeutics startup, the beginning of a multi-year adventure as a healthcare entrepreneur. Most recently, I led Strategy & BizOps at Verily, heading up Product Strategy for MedTech and Devices, including wearables, digital biomarkers, and emerging products.

After several family members had heart attacks in their 40s and 50s, and -- despite being a life-long runner -- I was diagnosed with prediabetes in my 20s, I started a metabolic health journey that ultimately brought me to Levels’ waitlist. Now, I’m incredibly excited to join the team as Head of Clinical Product and can’t wait to push our mission forward together.