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.

ProLon® is a 5-day Fasting Mimicking Diet® that nourishes your body while supporting overall health. Studies have shown that fasting can have a positive effect on a number of health-related issues such cholesterol, inflammation, and fasting glucose levels.

ProLon® removes the need for water-only fasting, while responding to the unmet need of providing an accessible, proven and safe dietary programme that does not require ongoing lifestyle changes, such as long-term dieting.

What is ProLon®?





Benefits of ProLon®


ProLon® enhances your body’s natural processes of cellular clean-up and cell-based rejuvenation which naturally gets triggered when your body is in a prolonged (3 or more days) fasting state.


ProLon® has been shown to help people lose an average of 5 lbs. of fat and 1.2 inches of waist circumference, while preserving lean body mass).


ProLon® provides the body with a scientifically developed combination of micro and macro-nutrients designed to keep the body nourished while going through the rejuvenating process of the fasting state.


ProLon® was created in collaboration with some of the world’s best food scientists and chefs to provide delicious food that incorporates the science of FMDs.


ProLon® meals come in 5 grab-and-go boxes (one for each day) that include plant-based energy bars, soups, a variety of snacks, drinks, and supplements.


ProLon® is gluten-free and uses healthy, mostly plant-based ingredients including olives, vegetables, fruit, nuts, seeds, dark chocolate and herbal teas.

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.

The Benefits Continue After The 5 Days End

Cell-Proliferation begins and continues for up to 5 days after you complete the ProLon® Fasting Mimicking Diet® and return to your regular healthy meal plan.

Get started today!

Optimize your health span in just 5 days

Is ProLon® right for me?

How To Take ProLon®

How Often Should You Follow The 5-Day ProLon® Diet?

ProLon® is not recommended for:

  • Children under the age of 18
  • Women who are pregnant or breast feeding
  • Individuals who are allergic to nuts or soy
  • Individuals with a Body Mass Index (BMI) <18.5
  • Individuals diagnosed with serious medical conditions or disease, unless approved in writing by a physician appropriately trained to treat that condition
  • Individuals who have been severely weakened by a disease or medical procedure
  • Individuals who are taking medications which may not be safely consumed with a calorie restricted diet unless authorised in writing by a licensed physician
  • Individuals with Diabetes (type 1 and type 2), cardiovascular disease and cancer, unless approved in writing by a licensed physician. N.B. ProLon® should never be combined with glucose lowering drugs, such as metformin or insulin
  • Fasting is prohibited for individuals with particular metabolic diseases, such as those affecting gluconeogenesis
  • Individuals with a history of significant cardiac disease, particularly uncompensated congestive heart failure
  • NYHA grade 2 or more or LVEF <40% on any prior assessment
  • Individuals with a history of syncope (fainting) with calorie restriction or other medical co-morbidities
  • Individuals who have special dietary needs that are incompatible with the ProLon® meal plan
  • Individuals with liver or kidney disorders that may be affected by the very low glucose and protein content of the diet


Visit Our Frequently Asked Questions Page

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! As a result of my positive personal experience and the compelling scientific research behind it, I’ve started recommending ProLon to my patients – more than 100 already. Every patient who completed the 5-day regimen has lost weight and all found the experience very educational, in some cases eye opening. And nearly everyone was able to complete it. I plan to use ProLon as an essential tool at my disposal to help my patients kick start and adopt a healthier lifestyle."

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.”

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