Boundless Life

Full show notes: https://bengreenfieldlife.com/jimmypodcast
In this episode with Jimmy St. Louis, you'll hear how a former NFL player, US Olympic rowing trials competitor, and four-time CrossFit regionals athlete built his career around defining the standard of care in longevity medicine. Jimmy shares the full arc of his path from a three-sport young athlete through three ACL tears, into a spine surgery business that performed 100,000 procedures, and then into Agentis Longevity, a company built around acquiring the best longevity clinics in the country and unifying them under one consistent set of protocols. You will also get a full breakdown of the Longevity Quotient, the five-test battery Agentis uses to score every new patient, and hear how Jimmy and I built a custom Agentis x Boundless protocol for my listeners.
Jimmy St. Louis is a healthcare entrepreneur, operator, and former elite athlete dedicated to driving the standard of personalized health, longevity, and regenerative medicine. He is the CEO of Agentis, a platform built to help people live healthier, happier, longer lives through best-in-class longevity treatments. He also serves as President of the Personalized Health Association, leading a national movement to advance regenerative and personalized healthcare through advocacy, education, and collaboration. A former NFL player and US Rowing Team member, Jimmy holds a B.S. in Business Administration, an MBA, and dual M.S. degrees in Finance and Telecommunications.
Try the Agentis x Boundless Protocol
Book your LQ assessment, a $149 blood panel measuring over 60 biomarkers. Within five to seven days you'll get your Longevity Quotient, a single number from 0 to 99 quantifying how your body is aging compared to your peers, plus a personalized 12 week protocol built around your bloodwork. Labs can be drawn at home anywhere in the country or in-clinic at Arete in Nashville. No commitment to start, HSA/FSA eligible.
Use code AGENTIS15 for 15% off at checkout.
Start your journey with Agentis Longevity here.
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See omnystudio.com/listener for privacy information.

Full show notes: https://bengreenfieldlife.com/bretthurt
In this episode with Brett Hurt, serial tech entrepreneur and author of Love Conquers Fear, you'll hear how he went from coding obsessively at seven to building one of the early internet's most popular games, surviving the dot-com bust, orchestrating two major exits, data.world to ServiceNow and Bazaarvoice's billion-dollar IPO, and experiencing a psychedelic awakening at 50 that redirected his entire life.
You will also hear his vision for what an Age of Abundance looks like in practice, from solar energy and robotics to brain-computer interfaces and the role AI might play in solving problems like clean water, food security, and healthcare access in places like Chad, and why Brett believes the single most important variable in whether AI helps or hurts humanity is whether the people building it are operating from love or from fear.
Brett Hurt is a tech entrepreneur and investor. He co-founded and led data.world, acquired by ServiceNow in July 2025, and previously co-founded Bazaarvoice and Coremetrics, acquired by IBM. Through his Love Conquers Fear holding company and podcast, he explores how AI and emerging technologies can either amplify fear or help create broad-based human flourishing.
Pick up a copy of Love Conquers Fear to discover how Brett crosses the streams of ancient wisdom and cutting-edge technology, rewiring humanity's relationship with AI, quantum computing, and emerging tech to move us from scarcity to abundance.
Episode Sponsors:
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Full show notes: https://bengreenfieldlife.com/tim2026
In this episode with repeat guest Tim Gray, you'll hear why the smartest biohackers are now removing more than they are adding, what paying attention to microplastics and environmental toxins in your own home and blood actually reveals, and why sulforaphane is making a comeback as a potential microplastic clearance tool. You'll also get a breakdown of the most interesting technologies coming to the Health Optimisation Summit this September, now in its first-ever three-day format, from hydrogen inhalation and bio-energy stimulation to hands-free vagus nerve stimulation, PEMF, STEMREGEN, and a full-body MRI trailer parked outside the venue.
Tim Gray is the founder and CEO of the Health Optimisation Summit, one of the world's largest health and longevity events, now expanding to multiple international locations. Known globally as The Health Community Guy, he is also the host of the Health Optimisation Podcast, an early-stage investor in breakthrough wellness brands, and the founder of London's first private hyperbaric oxygen clinic.
Use code BEN for 10% off HOS registration at bengreenfieldlife.com/HOS2026.
Episode Sponsors:
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See omnystudio.com/listener for privacy information.

Full show notes: https://bengreenfieldlife.com/jaspr2026
In this replay episode, Mike Feldstein makes the case that clean air may be the single most overlooked variable in your health, sleep, and cognitive performance stack.
Mike draws on firsthand experience from the LA wildfires (testing air, soil, and water after thousands of homes burned), revealing why most standard air purifiers, water tests, and insurance claims completely miss the real threat. You'll also discover how clean air has eliminated snoring and resolved sleep apnea symptoms in real households, what cognitive research on chess grandmasters reveals about pollution and decision-making, and how Mike is building Kindling Academy, a school designed from scratch around healthy air, light, toxin-free materials, and community wellness.
Mike Feldstein is the founder of Jaspr, an air purifier company built on the conviction that most people are sleeping, working, and raising children in air that quietly undermines their health. With a background in wildfire restoration and indoor air quality consulting, he channeled years of hands-on field experience into creating the Jaspr Air Scrubber, a unit with a 4-pound filter roughly 10 times heavier than most competitors, built for real-world performance rather than lab benchmarks. Jaspr collaborates with building biologists, air scientists, and health practitioners to deliver practical guidance on indoor environments.
Episode Sponsors
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Xtend Life: Tocotrienols Vitamin E, formulated without excess alpha-tocopherol and backed by 26 years of expertise in New Zealand, for cardiovascular, brain, and healthy aging support. Use code GREENFIELD for 15% off at xtendlife.com/benschoice.
See omnystudio.com/listener for privacy information.

Full show notes: https://bengreenfieldlife.com/marapodcast
In this episode, you'll hear the origin story of Mara Labs, a company built around sulforaphane, the active compound found in broccoli that has been studied across thousands of papers covering almost every major chronic disease, and why most people aren't actually getting it from their broccoli supplements. You will discover why the way your broccoli supplement is made determines whether any of it reaches your cells, what dose of the active compound moves the needle on inflammation, detox, and cellular defense, and how a single capsule compares to eating five pounds of adult broccoli a day. You'll also hear something that has not been discussed publicly before: a pilot study showing that this same compound can trigger your cells to release microplastics, those synthetic particles now found in human blood, lungs, and breast tissue, and push them out through your digestive system.
David Roberts is the co-founder of Mara Labs. After his wife Mara was diagnosed with breast cancer passed away in 2017, David channeled his experience into building a supplement company grounded in clinical science rather than ingredient trends. Dr. John Gildea is Chief Science Officer and co-founder, with a PhD in molecular biology and over 20 years studying the Nrf2 pathway at the University of Virginia. Author of more than 60 peer-reviewed publications, he developed the stabilization method that made shelf-stable sulforaphane possible and has since led research on sulforaphane's effects on microplastics and cancer stem cells.
For the next week, save 25% off all Mara Labs products using code BEN at bengreenfieldlife.com/maralabs. After June 20th, the code returns to the standard 15% off.
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See omnystudio.com/listener for privacy information.