The L-Nutra Story: From longevity research to real-world results.
As the science advanced, so did the mission. Today, L-Nutra has evolved into a multi-division company that spans both consumer wellness and clinical care, rooted in the same scientific foundation.
L-Nutra Health is the medical division of L-Nutra. We focus on helping people manage and potentially reverse chronic health conditions—like type 2 diabetes, prediabetes, insulin resistance, and obesity—using personalized, lifestyle-based programs grounded in evidence, not prescriptions.
A Timeline of Innovation
Our Leadership
Dr. Valter Longo PhD
Founder of L-Nutra
Director of the USC Longevity Institute and inventor of the Fasting Mimicking Diet. A pioneer in nutrition and aging research.
Dr. Joseph Antoun MD, PhD, MPP
CEO, L-Nutra
A physician and public health expert focused on transforming healthcare from prescription-based to food-based care.
Dr. William Hsu MD
Chief Medical Officer, L-Nutra
Harvard-trained endocrinologist and former VP at Joslin Diabetes Center. Leads clinical program development and care protocols.
Ashley Bizzell MS, RD
Director of Clinical Nutrition
Leads our national team of dietitians and is responsible for translating the science into patient-first care strategies.
What makes us different
Rooted in Research:
$48M in NIH funding, 25+ years of scientific study
Mission-Driven:
We believe food should be a first-line therapy—not a last resort
Whole-Person Care:
We combine clinical oversight, advanced nutrition therapy, and real-world behavior change strategies that are proven to work
Evidence-Based Outcomes:
67% of patients reduce diabetes medications, 1.4% A1C drop, 22 lbs fat-focused weight loss (while preserving muscle)
What Doctors Are Saying
"We’ve spent decades treating diabetes with medication. Now, with food as medicine, we’re changing the conversation to prevention and remission—and it’s working."
Dr. William Hsu
Chief Medical Officer, L-Nutra Health
"I’ve seen firsthand how nutrition can transform women’s metabolic health, from hormone balance to insulin resistance. The results are real—and long overdue."
Dr. Felice Gersh
Board-Certified OB-GYN, Integrative Women's Health Specialist
"When you address the root cause—like insulin resistance—you’re not just managing disease. You’re restoring health. And for many, that means freedom from medications."
Dr. Jason Fung
Nephrologist & Author of The Diabetes Code
Wondering how we can help you?
Type 2 diabetes, prediabetes, or weight struggles? See how L-Nutra transforms outcomes when standard care falls short.
Healthcare Providers
Clinically proven improvements to metabolic health and weight loss similar to a heart-healthy diet
Health Plans & Systems
Significantly less expensive per patient per year than leading weight loss and diabetes drugs