The first and only Fasting Mimicking Diet®.

A better you in just 5 days

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What is ProLon®?

ProLon® is fasting with food. Meals come in 5 small boxes, one for each day, carefully designed to nourish your body and promote positive changes.

5-Day Fasting Mimicking Diet®

Based on over 36 million dollars’ worth of research and decades of clinical studies by Professor Valter Longo, ProLon® allows your body to achieve the health benefits comparable to water-only fasting.

Learn more about FMD®

Benefits of the Fasting Mimicking Diet®

Is ProLon® Right For Me?

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How ProLon® works daily

Fasting State

The body transitions into a fasting state & fat-burning mode so it can begin cellular clean-up.

Fat Burning & Ketogenesis

Fat-burning ramps up, contributing to the initiation of ketogenesis (ketone production). By the end of this day (48hrs), ketosis may occur.


Cellular clean-up (autophagy) begins. Fat-burning and ketone production/utilization continues and increases.

Cellular Rejuvenation

Cellular cleaning/renewal & fat-burning continues.


Your transformational journey is completed. Re-feeding beyond day 5 will fuel a better you.

Features of ProLon®

Science & Research

Learn about ProLon’s science®

The Longevity Diet Book

Available soon

In the News

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Optimize your health span in just 5 days
Rachel Hunter

Supermodel, Actor, TV star, Businesswoman

“Professor Valter Longo’s Fasting Mimicking Diet is the best beauty product and secret that I have discovered”

Maria Tulpan, MD

Endocrinologist and Internist, MD, L-Nutra, Inc. Ambassador
“The ProLon plan is well organized, easy to follow, and well balanced throughout the day. My fiancée and I have done it multiple times over the past few months already, with amazing results. The effect of reduced appetite and stronger self-control lingers on for weeks after each cycle. He lost over 15 pounds of fat while I lost those last 4-5 pounds I wanted to lose for a while. And we both feel great!”

Jake Orville

President and CEO at Cleveland HeartLab, L-Nutra, Inc. Ambassador
“I have become a huge cheerleader for the product. I have now dropped 14 pounds and going.  I have stayed on a very healthy diet after my first ProLon as it was the springboard for my transition to health and happiness.  I had my blood test done pre and post and the results are very encouraging and I wasn’t unhealthy to start.  I can only imagine the effect ProLon can have on someone who needs this more than I did.”