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“I’ve just completed my first round of ProLon. I found it pretty easy after day 2 and feel great now. I have no health conditions and now weigh 61 kgs. (I lost 2kgs on ProLon).”

EmmaAge 45

“This diet worked very well – I’ve lost 6 pounds in weight and an inch around my waist. I finished 6 days ago and the weight has stayed off. I’m still about a stone overweight, so I can imagine doing it all again.”

John PAge 65

“I’m so glad ProLon has made it to the UK – I’ve followed Valter Longo’s work for some time and have done the occasional 4 day fast myself but this is so well designed it takes all the fiddling to get all your nutrients out of it.”

CarolynAge 65

“Just done my first 5 days – worked really well, feel 20 years younger and so much more positive and energetic.”

AnonymousAge 52

“Sunday was a transition day, during which I ate lightly, and after that I was allowed to go back to my usual diet. But it is a strange thing – I haven’t; not really. A week later, I have to say I am very impressed.”

NicolaAge 59

5-Day Fasting Mimicking Diet

Based on over 25 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. The cellular changes that occur during the fast allow you to have the freedom to go back to your usual lifestyle for the remaining 25 days of the month. Complete the programme 3-12 times per year to maintain the long lasting benefits of fasting.

ProLon® is fasting with food. Meals come in 5 small boxes, one for each day, that include plant-based energy bars, soups, a variety of snacks, drinks, and supplements. All ingredients have been studied and carefully designed to nourish your body and promote positive changes.

Features of ProLon®


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


    The natural, low-calorie, plant-based meal programme preserves lean body mass, including muscle and bone.

Regenerate and rejuvenate

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


    ProLon® uses plant-based* ingredients including fresh olives, vegetables, fruit, nuts, seeds, chocolate and herbal teas, and does not contain any additives or chemicals.

    *Prolon® contains honey and gelatin.

ProLon® is taking the world by storm

Rachel Hunter
Supermodel, Actor, TV star, Businesswoman – Rachel Hunter

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

Jane Atkinson
Features Editor of The Sun & The Sun on Sunday

“I have tried pretty much every diet going and this is undoubtedly my favourite – because it works! Prolon is a ‘fast-mimicking diet’ that lasts just five days to activate the body’s ‘dormant ability to protect, repair and rejuvenate itself’. So it helps you lose weight but scientists say it can cut heart disease and cancer risks if done regularly too. You get five boxes of food – crunchy kale biscuits that I loved, filling soups, sweet nut bars and yummy, although small, chocolate bars. it averages out at about 800 calories a day. Not fun or easy but for five days it ISN’T difficult. I shifted weight that I’ve been trying to unpack for over A YEAR. Blood tests afterwards showed my visceral fat, ‘the dangerous stuff that wraps around your internal organs’  had dropped too. A month later I’ve put on ONE solitary pound. Best diet I’ve ever done and will do this every couple of months to keep on track!”

Jack Orville
President and CEO at Cleveland Heartlab – Cleveland Heartlab

“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 L-Nutra can have on someone who needs this more than I did.”

Is ProLon® For Me?

ProLon® is intended for use by individuals who want to optimise their health and wellbeing.

Frequently Asked Questions

Have a related question or interested in learning more about ProLon®? Visit our FAQ section to learn more about ProLon®.

Vicky’s Prolon Experience

“When I got on the scales at the end of it and had lost 7lbs/ 3.2kgs as well as my visceral fat dropping from 121.8cm2 to 107.1cm2, it was all worth it. I felt energized on the last day and my stomach felt flatter and less bloated.”

“My bloods also showed that every single marker had improved. Significantly, in just five days, somatomedin-C (IGF1)  had dropped from 18.1 nmol to 17.0 nmol. Would I do it again? Yes. If you’d asked me on day three, I would have said ‘never again’ , however, I would more than happily do this once every three months to get the weight loss and health benefits.”

Vicky Eldridge,

Editor of Aesthetic Medicine Magazine

Science & Research

Learn more about ProLon®, FMD’s™, and fasting science and research.

In The News

ProLon® UK Distribution Ltd.