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“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. Surprised to say, I’m looking forward to my next 5 days”

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

“As an long time advocate of fasting, Prolon certainly made fasting simpler since everything is included. This would make it easier for those new to fasting to follow. Will definitely use again. Well done Prolon!”

AliceAge 35

“This programme really changed how I think about portion sizes. I hope many others can use ProLon and benefit from better health.”

Jane MAge 47

“I loved it and felt fab when it was the transition day. The following day I did my usual exercise and couldn’t believe my energy levels. I ordered 2 more boxes as soon as it was possible. Thank you Prolon.”

AnonymousAge 55

“I plan to do this once a month for 2-3 more months as it has done tremendously with kick-starting my eating regime of Paleo-type diet as wasn’t beneficial until I did this ‘fast’ – highly recommend!!!”

JennieAge 59

“Felt fantastic from day 2 onward and my energy levels and sense of wellbeing have lasted long after I finished. Happy I tried and will do again in a couple months.”

JulieAge 26

“I rarely felt hungry and 5 days provided very good results. I  missed coffee while on the diet but have cut down drastically afterwards and miss it less!”

KatieAge 34

“The programme was easier than expected but produced great results. It’s very nicely packaged, organised and simple to follow.”

ClaireAge 43

“The best thing is the mental clarity you get at the end. Also, I feel less hungry and it’s easier to eat smaller portions and still feel satisfied.”

EnzoAge 47

“Yes we feel great having just completed our first round. I must say that the concept and design was wonderful – better than going to a health spa – truly!”

DianeAge 65

“I just want to say how amazed I am at the results. I feel so much better for completing the 6 days. I’m so pleased I did it.”


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.

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 health benefits.”

Vicky Eldridge,

Editor of Aesthetic Medicine Magazine

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!”

Nichola Joss
Celebrity Facialist  – Nicholajoss.com

“I had such a great experience with ProLon and felt so much better, cleaner, clearer, lighter!”

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®.

Science & Research

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

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