Who We Are

The L-Nutra Story: From longevity research to real-world results.

L-Nutra began with a bold vision: To transform what can be achieved through nutrition and longevity science. The company's first innovation was a 5-day nutrition programme based on decades of research into fasting and cellular rejuvenation. 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 personalised, lifestyle-based programmes grounded in evidence, not prescriptions.

Explore Programmes

USC Longevity Institute

Founded on 15+ years of pioneering research

Timeline of Innovation

From groundbreaking research to a leading clinical programme — here's how we got here.

2008

The Beginning

Early research begins at the University of Southern California Longevity Institute.

2015

Clinical Trials

FMD clinical trials published; NIH begins funding fasting research.

2016

Launch

The fasting-mimicking diet programme is launched for consumer use.

2019

L-Nutra Health Founded

L-Nutra Health is founded as the clinical care division.

2021-2024

Partnerships

L-Nutra partners with leading institutions (e.g., Heidelberg, UCLA, Charite) to run metabolic health and diabetes reversal studies.

2023

Expansion

L-Nutra Health expands into digital clinical care, supporting patients through licensed dietitians and physicians.

Our Leadership Team

World-class clinicians and researchers driving the future of metabolic health.

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 programme development and care protocols.

Ashley Bizzell MS, RD

Director of Clinical Nutrition

Leads our team of dietitians and is responsible for translating the science into patient-first care strategies.

What Makes Us Different

We believe food should be a first-line therapy — not a last resort.

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 behaviour change strategies that are proven to work.

Evidence-Based Outcomes

Real results from our clinically designed programmes.

67%

of patients reduce diabetes medications

1.4%

A1C drop

22 lbs

fat-focused weight loss (preserving muscle)

$48M

in NIH research funding

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.”